- any of a group of hard, vitreous minerals, silicates of calcium, magnesium, iron, or manganese with aluminum or iron, varying in color: a deep-red transparent variety is used as a gem and as an abrasive.
- a deep-red color.
- U.S. clergyman and abolitionist.
- any of a group of hard glassy red, yellow, or green minerals consisting of the silicates of calcium, iron, manganese, chromium, magnesium, and aluminium in cubic crystalline form: used as a gemstone and abrasive. Formula: A 3 B 2 (SiO 4) 3 where A is a divalent metal and B is a trivalent metal
- a tackle used for lifting cargo
