/ Dictionary / Index S spruce sawfly: Meaning and Definition of Find definitions for: spruce' saw"fly Pronunciation: [key] any of several sawflies of the family Diprionidae, esp. Diprion hercyniaethe larvae of which feed on the foliage of spruce. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. spruce pine spruce-up Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language