/ Dictionary / Index F feather key: Meaning and Definition of Find definitions for: feath'er key" Pronunciation: [key] — Mach. Mach. a rectangular key connecting the keyways of a shaft and a hub of a gear, pulley, etc., fastened in one keyway and free to slide in the other so that the hub can drive or be driven by the shaft at various positions along it. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. feathering feather-legged Related Content Daily Word Quiz: candor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language