/ Dictionary / Index I Iceland spar: Meaning and Definition of Find definitions for: Ice'land spar' Pronunciation: [key] a transparent variety of calcite that is double-refracting and is used as a polarizer. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Iceland moss icemaker Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language