/ Dictionary / Index J jaculiferous: Meaning and Definition of Find definitions for: jac•u•lif•er•ous Pronunciation: ( jak"yu-lif'ur-us), [key] — adj. Bot., Zool. having dartlike spines. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. jaculate Jacuzzi Related Content Daily Word Quiz: meritocracy Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language