a large Australian white parrot, Kakatoe galerita, with a yellow erectile crest Also called white cockatoo
adjective 1. another word for sulphurous (sense 1) 2. of the yellow colour of sulphur
verb -rets, -retting, -retted (US) -rets, -reting, -reted 1. (transitive) to treat or combine with sulphur
- Sulphuretted hydrogen
noun 1. another name for hydrogen sulphide
or sulfur-flower [suhl-fer-flou-er] /ˈsʌl fərˌflaʊ ər/ noun 1. a plant, Eriogonum umbellatum, of the buckwheat family, native to the western coast of the U.S., having leaves with white, woolly hairs on the underside and golden-yellow flowers.