name · noun · verb · 18 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
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/ˈθʌm/
[ˈθʌ̈m]
US:Recorded audio is listed in the source snapshot.
rhymes with -ʌm
CMU ARPABET:TH AH1 M
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
name
Meaning 1
The eastern part of the Lower Peninsula of Michigan, United States (the "Mitten").
Definition source: English Wiktionary via Wiktextract
Usage: informal
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
The shortest and thickest digit of the hand that for humans has the most mobility and can be made to oppose (moved to touch) all of the other fingers.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
noun
Meaning 3
The part of a slider that may be moved linearly along the slider.
Definition source: English Wiktionary via Wiktextract
Definition source: English Wiktionary via Wiktextract
Usage: Internet, colloquial
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
5
noun
Meaning 5
A top hatch plate for covering an excavator bucket, used to keep material in the digger bucket after scooping it up, and not letting it spill out.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
6
verb
Meaning 6
To touch or cover with the thumb.
Definition source: English Wiktionary via Wiktextract
Usage: transitive
Examples
to thumb the touch-hole of a cannon
Meaning relationships
Synonyms: none provided
Antonyms: none provided
7
verb
Meaning 7
To turn the pages of (a book) in order to read it cursorily.
Definition source: English Wiktionary via Wiktextract
Usage: transitive
Examples
thumb through
I thumbed through the book and decided not to bother reading it all.
Meaning relationships
Synonyms: peruse, flip through
Antonyms: none provided
8
verb
Meaning 8
To gesture with the thumb, for example when flagging a ride.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
9
verb
Meaning 9
To hitchhike.
Definition source: English Wiktionary via Wiktextract
Topics: lifestyle, tourism, transport, travel
Examples
So I started thumbin' back east, toward my hometown.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
10
verb
Meaning 10
To soil or wear with the thumb or the fingers; to soil, or wear out, by frequent handling.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
11
verb
Meaning 11
To manipulate (an object) with the thumb; especially, to pull back the hammer or open the cylinder of a revolver.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
12
verb
Meaning 12
To fire (a single action revolver) quickly by pulling the hammer while keeping the trigger depressed.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
13
noun
Meaning 13
a convex molding having a cross section in the form of a quarter of a circle or of an ellipse
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: ovolo, quarter round
Antonyms: none provided
Broader terms: molding, moulding
Narrower terms: echinus
14
noun
Meaning 14
the part of a glove that provides a covering for the thumb
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Broader terms: covering
15
noun
Meaning 15
the thick short innermost digit of the forelimb
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: pollex
Antonyms: none provided
Broader terms: finger
16
verb
Meaning 16
feel or handle with the fingers
Definition source: Princeton WordNet 3.0
Examples
finger the binding of the book
Meaning relationships
Synonyms: finger
Antonyms: none provided
Broader terms: touch
17
verb
Meaning 17
travel by getting free rides from motorists
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: hitchhike, hitch
Antonyms: none provided
Broader terms: ride
18
verb
Meaning 18
look through a book or other written material
Definition source: Princeton WordNet 3.0
Examples
He thumbed through the report
She leafed through the volume
Meaning relationships
Synonyms: flick, flip, riffle, leaf, riff
Antonyms: none provided
Broader terms: peruse
History
Etymology
From its thumb-like shape.
Derived from Middle English thombe, thoume, thoumbe (“thumb”), from Old English þūma (“thumb”), from Proto-West Germanic *þūmō (“thumb”), from Proto-Germanic *þūmô (“thumb”), from Proto-Indo-European *tūm- (“to grow”). Cognate with West Frisian tomme (“thumb”), Dutch duim (“thumb”), Low German Duum (“thumb”), German Daumen (“thumb”), Danish, Norwegian Bokmål, and Norwegian Nynorsk tomme (“inch”), Norn tum (“thumb”), Swedish tumme (“thumb”), tum (“inch”), Russian дюйм (djujm, “inch”), Ancient Greek τύμβος (túmbos, “burial mound”). Also compare Welsh tyfu (“to grow”), Latin tumēre (“to swell”), Lithuanian tumėti (“to thicken, clot”), Avestan 𐬀𐬨𐬏𐬙 (amūt, “strong”), Sanskrit तुम्र (túmra, “strong, thick”). The parasitic ‐b has existed since the late 13th century. Doublet of tomb.
Across languages
Translations
260 source translations are retained for this English entry.