Noun
F50 (plural F50s)
(sports, nautical) A hydrofoil catamaran sailing racing yacht, with a wingsail mainsail.
It was also used as speed control patches for certain Soap Shoes models. and the laces for the adidas F50 adiZero Prime football boot. Source: Internet
These processors utilize the same microprocessor technology previously delivered on the IBM Model F50 Server. Source: Internet
It was to be called the F60, continuing on from the F40 and F50, but Ferrari was so pleased with it, they called it the Enzo instead. Source: Internet