/ Dictionary / Index A aventurine: Meaning and Definition of Find definitions for: a•ven•tu•rine Pronunciation: (u-ven'chu-rēn", -rin), [key] — n. an opaque, brown glass containing fine, gold-colored particles. any of several varieties of minerals, esp. quartz or feldspar, spangled with bright particles of mica, hematite, or other minerals. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: aventurine (Thesaurus) Aventine avenue Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language