1. The beaver genus of animals; a reddish-brown substance, of a strong penetrating smell, secreted by glands in the groin of the beaver; a hat, properly a beaver hat.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• mastar,
• cbsto,
• distor,
• jestor,
• custor,
• castal,
• coutor,
• fastar,
• dostor,
• custon,
• castl,
• fostor,
• castel,
• coster,
• casta,
• castr,
• castody,
• custmor,
• costr,
• castomer

• castrato,
• castrate,
• cast-iron,
• castrillo,
• castroism,
• castrated,
• Casdorph,
• Cast iron,
• cast,
• castruita,
• castries,
• Castorena,
• caster,
• pastor,
• cantor,
• castro,
• Castrejon,
• coast.

The adjective form of the word "castor" is "castorian".

The plural of the "castor" can be the "castors".

The singular of the "castor" can be the "castor".