Breadcrumb Home > Dictionary Cite Meaning of CST Find definitions for: CST Pronunciation: [key] Central Standard Time. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: cst (Thesaurus) C-SPAN C star Related Content Daily Word Quiz: apotheosis Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language