Un"der*coat` (?), n. 1. A coat worn under another; a light coat, as distinguished from an overcoat, or a greatcoat.

2. A growth of short hair or fur partially concealed by a longer growth; as, a dog's undercoat.

Un"der*coat` (?), n. 1. A coat worn under another; a light coat, as distinguished from an overcoat, or a greatcoat.

2. A growth of short hair or fur partially concealed by a longer growth; as, a dog's undercoat.