/ Dictionary / Index C cattle grub: Meaning and Definition of Find definitions for: cat'tle grub" Pronunciation: [key] the larva or adult of a warble fly, esp. Hypoderma lineatum, a common pest of cattle in North America. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cattle egret cattle guard Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language