F50
noun
noun ·Rare ·Advanced level
Definitions
Noun
- 1 A hydrofoil catamaran sailing racing yacht, with a wingsail mainsail.
Etymology
From foil + fifty, from AC50; because it measures approximately 50 feet on the waterline, and uses hydrofoils, and is derived from the AC50 class.
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.