F50

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 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.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.