Defn: the northernmost of the two bright stars in the constellation
Gemini, the other being Pollux.
CASTOR; CASTORITE
Cas"tor, Cas"tor*ite, n. Etym: [The minerals castor and pollux were
so named because found together on the island of Elba. See Castor and
Pollux.] (Min.)
Defn: A variety of the mineral called petalite, from Elba.
CASTOR AND POLLUX
Cas"tor and Pol"lux. Etym: [Castor and Pollux were twin sons of
Jupiter and Leda.] (Naut.)
Defn: See Saint Elmo's fire, under Saint.
CASTOR BEAN
Cas"tor bean". (Bot.)
Defn: The bean or seed of the castor-oil plant (Ricinus communis, or
Palma Christi.)
CASTOREUM
Cas*to"re*um, n. Etym: [L. See Castor.]
Defn: A peculiar bitter orange-brown substance, with strong, penetrating odor, found in two sacs between the anus and external genitals of the beaver; castor; — used in medicine as an antispasmodic, and by perfumers.
CASTORIN
Cas"to*rin, n. Etym: [From 1st Castor.] (Chem.)