A genus of iridaceous plants, with pretty blossoms rising separately from the bulb or corm. C. vernus is one of the earliest of spring-blooming flowers; C. sativus produces the saffron, and blossoms in the autumn.
- Any of various perennial Eurasian herbs of the genus Crocus, having grasslike leaves and showy, variously colored flowers.
- Any of several other plants, such as the autumn crocus.
- A grayish to light reddish purple.
- A dark red powdered variety of iron oxide, Fe2O3, used as an abrasive for polishing.
- A coarse, loosely woven material like burlap, once used to make sacks for shipping saffron. See Regional Note at gunnysack.