/ Dictionary / Index U United States Customs Service: Meaning and Definition of Find definitions for: Unit'ed States' Cus'toms Serv"ice Pronunciation: [key] — U.S. Govt. U.S. Govt. the division of the Department of the Treasury that collects customs and enforces laws dealing with smuggling. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. United States Army United States Employment Service Related Content Daily Word Quiz: portent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language