/ Dictionary / Index C customer: Meaning and Definition of Find definitions for: cus•tom•er Pronunciation: (kus'tu-mur), [key] — n. a person who purchases goods or services from another; buyer; patron. a person one has to deal with: a tough customer; a cool customer. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: customer (Thesaurus) custom-built customer's man 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