/ Dictionary / Index C Commack: Meaning and Definition of Find definitions for: Com•mack Pronunciation: (kō'mak, kom'ak), [key] — n. a town on central Long Island, in SE New York. 34,719. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. comma bacillus comma fault Related Content Daily Word Quiz: abstain Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language