/ Dictionary / Index T tussock caterpillar: Meaning and Definition of Find definitions for: tus'sock cat"erpillar Pronunciation: [key] the larva of a tussock moth. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. tussock tussock grass Related Content Daily Word Quiz: belligerent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language