noun · verb · 5 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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Australian:/ˈhɑe.dɹəˌfoɪl/
US:/ˈhaɪ.dɹoʊˌfɔɪl/
US:Recorded audio is listed in the source snapshot.
CMU ARPABET:HH AY1 D R AH0 F OY2 L
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
noun
Meaning 1
A wing attached to the hull of a ship that raises it out of the water when travelling at speed and thus reduces drag.
Definition source: English Wiktionary via Wiktextract
Topics: nautical, transport
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
A vessel equipped with such a device.
Definition source: English Wiktionary via Wiktextract
Topics: nautical, transport
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
verb
Meaning 3
To operate or use or ride atop a hydrofoil wing on a hull so equipped.
Definition source: English Wiktionary via Wiktextract
Usage: intransitive
Topics: nautical, transport
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: foil
Antonyms: none provided
4
noun
Meaning 4
a speedboat that is equipped with winglike structures that lift it so that it skims the water at high speeds
Definition source: Princeton WordNet 3.0
Examples
the museum houses a replica of the jet hydroplane that broke the record
Meaning relationships
Synonyms: hydroplane
Antonyms: none provided
Broader terms: speedboat
5
noun
Meaning 5
a device consisting of a flat or curved piece (as a metal plate) so that its surface reacts to the water it is passing through
Definition source: Princeton WordNet 3.0
Examples
the fins of a fish act as hydrofoils
Meaning relationships
Synonyms: foil
Antonyms: none provided
Broader terms: device
History
Etymology
From hydro- + foil.
Across languages
Translations
44 source translations are retained for this English entry.