Main Entry: un·der·coat

Pronunciation: \-ˌkōt\

Function: noun

Date: 1591

1 : a coat or jacket worn under another
2 : a growth of short hair or fur partly concealed by the longer and usually coarser guard hairs of a mammal
3 a : a coat (as of paint) applied as a base for another coat b : undercoating
4 dialect : petticoat