/ Dictionary / Index L lupulin: Meaning and Definition of Find definitions for: lu•pu•lin Pronunciation: (l'pyu-lin), [key] — n. the glandular hairs of the hop, Humulus lupulus, formerly used in medicine as a sedative. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. lupoma lupus Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language