Definition of "castor" in Englisch

noun

1. A hat made from the fur of the beaver.

2. A heavy quality of broadcloth for overcoats.

3. Castoreum (bitter exudate of mature beavers).

4. Any of various nymphalid butterflies of the genus Ariadne, of Africa and Asia.

noun

1. (mineralogy) A variety of petalite found in Elba.

noun

1. (especially UK) Alternative spelling of caster, especially in its senses