/ Dictionary / Index C charlock: Meaning and Definition of Find definitions for: char•lock Pronunciation: (chär'luk), [key] — n. a wild mustard, Brassica kaber, having lobed, ovate leaves and clusters of small, yellow flowers, often troublesome as a weed in grainfields. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: charlock (Thesaurus) Charline Charlot Related Content Daily Word Quiz: jaundice Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language