/ Dictionary / Index P pinaceous: Meaning and Definition of Find definitions for: pi•na•ceous Pronunciation: (pī-nā'shus), [key] — adj. belonging to the plant family Pinaceae. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. piña* piña cloth Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language