Definition of oak
1 a : any of a genus (Quercus) of trees or shrubs of the beech family that produce acorns; also : any of various plants related to or resembling the oaks b : the tough hard durable wood of an oak tree
2 : the leaves of an oak used as decoration
oakenplay \ˈō-kən\ adjective
Examples of oak in a sentence
Tall oaks line the street.
The table is solid oak.
The cabinets are made of oak.
Origin and Etymology of oak
Middle English ook, from Old English āc; akin to Old High German eih oak and perhaps to Greek aigilōps, a kind of oak
First Known Use: before 12th century
OAK Defined for English Language Learners
Definition of oak for English Language Learners
: a type of tree that grows in northern parts of the world and that produces acorns
: the wood of an oak tree
OAK Defined for Kids
Definition of oak for Students
: a tree or shrub that produces acorns and has tough wood much used for furniture and flooring
Seen and Heard
What made you want to look up oak? Please tell us where you read or heard it (including the quote, if possible).