/ Dictionary / Index F flattop: Meaning and Definition of Find definitions for: flat•top Pronunciation: (flat'top"), [key] — n. Informal. an aircraft carrier. a type of crew cut in which the hair is cropped in a flat plane across the top. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: flattop (Thesaurus) flattish flatulent Related Content Daily Word Quiz: belligerent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language