/ Dictionary / Index N nulla-nulla: Meaning and Definition of Find definitions for: nul•la-nul•la Pronunciation: (nul'u-nul'u), [key] — n. Australian. an Aboriginal club or cudgel for use in hunting and war. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. nullah null hypothesis Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language