/ Dictionary / Index H hubcap: Meaning and Definition of Find definitions for: hub•cap Pronunciation: (hub'kap"), [key] — n. a removable cover for the center area of the exposed side of an automobile wheel, covering the axle. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: hubcap (Thesaurus) hubby Hubei Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language