undercoat

noun

un·​der·​coat ˈən-dər-ˌkōt 

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

Examples of undercoat in a Sentence

Recent Examples on the Web

Indoor dogs often shed insulating undercoats and shouldn't be shaved in winter; their natural coats provide warmth. —Sergio Candido, CBS News, 24 Jan. 2026

Similarly, cashmere, made from goats’ undercoats, will also shrink when exposed to hot temperatures. —Hallie Milstein, Southern Living, 15 Jan. 2026

Breeds with thick, layered undercoats are naturally winter-ready—but most dogs don’t fall into this category. —Alice Gibbs, MSNBC Newsweek, 23 Nov. 2025

These brushes can penetrate all the way to your dog’s undercoat. —Bestreviews, Mercury News, 7 Nov. 2025

Word History

First Known Use

1591, in the meaning defined at sense 1

Rhymes for undercoat

• anecdote
• antidote
• asymptote
• creosote
• dimethoate
• epidote
• ferryboat
• motorboat
• overcoat
• petticoat
• riverboat
• underwrote

Kids Definition

undercoat

noun

un·​der·​coat -ˌkōt 

1

: a coat or jacket worn under another

2

: a growth of short hair or fur partly concealed by a longer growth of usually coarse hairs

a dog's undercoat

3

: a coat of paint under another

undercoat verb