noun · verb · 4 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
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
/ˈnæpsæk/
US:Recorded audio is listed in the source snapshot.
CMU ARPABET:N AE1 P S AE2 K
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
noun
Meaning 1
A case of canvas or leather, for carrying items on the back.
Definition source: English Wiktionary via Wiktextract
Usage: US, archaic
Examples
1936, Arthur Ransome, Pigeon Post, ch 3. "All but Nancy carried knapsacks, with sandwiches and thermos flasks of tea. Peggy’s knapsack held Nancy’s provisions as well as her own, for on Nancy’s shoulders, instead of a knapsack, was a pigeon-basket [...]"
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
A set of values from which a subset is chosen.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
verb
Meaning 3
To go hiking while burdened with a knapsack, usually overnight or for longer.
Definition source: English Wiktionary via Wiktextract
Examples
My sleeping bag fell off my backpack into the water, while we were knapsacking up the mountain.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
4
noun
Meaning 4
a bag carried by a strap on your back or shoulder
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: backpack, back pack, packsack, rucksack, haversack
Antonyms: none provided
Broader terms: bag
Narrower terms: kitbag, kit bag
History
Etymology
From Low German knapzak or Dutch knapzak (older form cnapsack), from Middle Dutch cnappen (“to bite with teeth”), ultimately from knappen (“to eat, crack”), of imitative origin, + sack. German Knappsack is from Dutch.
Across languages
Translations
27 source translations are retained for this English entry.
Bulgarian:
раница
(ranica)
— case of canvas or leather, for carrying items on the back
Finnish:
reppu
— case of canvas or leather, for carrying items on the back
French:
sac à dos
— case of canvas or leather, for carrying items on the back
Georgian:
ზურგჩანთა
(zurgčanta)
— case of canvas or leather, for carrying items on the back
German:
Rucksack
— case of canvas or leather, for carrying items on the back
German:
Tornister
— case of canvas or leather, for carrying items on the back
Gothic:
𐌼𐌰𐍄𐌹𐌱𐌰𐌻𐌲𐍃
(matibalgs)
— case of canvas or leather, for carrying items on the back
Ancient Greek:
γυλιός
(guliós)
— case of canvas or leather, for carrying items on the back
Hungarian:
hátizsák
— case of canvas or leather, for carrying items on the back
Hungarian:
tarisznya
— case of canvas or leather, for carrying items on the back
Hungarian:
általvető
— case of canvas or leather, for carrying items on the back
Hungarian:
iszák
— case of canvas or leather, for carrying items on the back
Hungarian:
batyu
— case of canvas or leather, for carrying items on the back
Hungarian:
zsák
— case of canvas or leather, for carrying items on the back
Hungarian:
kenyérzsák
— case of canvas or leather, for carrying items on the back
Hungarian:
oldalzsák
— case of canvas or leather, for carrying items on the back
Italian:
zaino
— case of canvas or leather, for carrying items on the back
Italian:
zainetto
— case of canvas or leather, for carrying items on the back
Latin:
mantica
— case of canvas or leather, for carrying items on the back
Latin:
pēra
— case of canvas or leather, for carrying items on the back
Russian:
рюкза́к
(rjukzák)
— case of canvas or leather, for carrying items on the back
Russian:
ранец
(ranec)
— case of canvas or leather, for carrying items on the back
Spanish:
morral
— case of canvas or leather, for carrying items on the back
Swedish:
ryggsäck
— case of canvas or leather, for carrying items on the back
Tibetan:
ཕད་གོག
(phad gog)
— case of canvas or leather, for carrying items on the back
Turkish:
sırt çantası
— case of canvas or leather, for carrying items on the back
Yiddish:
רוקזאַק
(rukzak)
— case of canvas or leather, for carrying items on the back