/ Dictionary / Index H haustellum: Meaning and Definition of Find definitions for: haus•tel•lum Pronunciation: (hô-stel'um), [key] — pl. haus•tel•la (in certain crustaceans and insects) an organ or part of the proboscis adapted for sucking blood or plant juices. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. haustellate haustorium Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language