/ Dictionary / Index A alfa: Meaning and Definition of Find definitions for: al•fa Pronunciation: (al'fu), [key] — n. a word used in communications to represent the letter A. Al•fa Pronunciation: (al'fu), [key] — n. Mil. the NATO name for a class of nuclear-powered Soviet attack submarine having a titanium hull and a submerged speed of more than 40 knots. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Alf alfalfa Related Content Daily Word Quiz: loathe Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language