Castor and Pollux: The "Dioscuri", two heroes of Greek and Roman mythology. Their figures were probably painted or sculptured on the prow of the ship which Luke refers to (Acts 28:11). They were regarded as the tutelary divinities of sailors. They appeared in the heavens as the constellation Gemini.

Noah Webster's New International Dictionary of the English Language

1. (n.) A genus of rodents, including the beaver. See Beaver.

2. (n.) Castoreum. See Castoreum.

3. (n.) A hat, esp. one made of beaver fur; a beaver.

4. (n.) A heavy quality of broadcloth for overcoats.

5. (n.) See Caster, a small wheel.

6. (n.) the northernmost of the two bright stars in the constellation Gemini, the other being Pollux.

7. (n.) Alt. of Castorite