n. (Bot.) Any plant of the genus Geissois, having seeds overlapping like tiles on a roof. [ Webster 1913 Suppl. ]
n. (Bot.) (a) Seed from which oil is expressed, as the castor bean; also, the plant yielding such seed. See Castor bean. (b) A cruciferous herb (Camelina sativa). (c) The sesame. [ 1913 Webster ]