black oak

noun

1

: any of several American oaks having dark bark or foliage (such as blackjack or scarlet oak)

especially : a large timber tree (Quercus velutina) of the eastern and central U.S. that has foliage resembling that of the red oak and a yellow inner bark that is used for tanning

called also quercitron

2

Australia : she-oak sense 1

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now

Kids Definition

black oak

noun

: a large timber tree of the central and eastern U.S. with a yellow inner bark used for tanning

also : any of several other North American oaks