noun, often attributive \ˈōk\

: a type of tree that grows in northern parts of the world and that produces acorns

: the wood of an oak tree

plural oaks or oak

Full Definition of OAK

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
:  the leaves of an oak used as decoration
oak·en \ˈō-kən\ adjective

Examples of OAK

  1. Tall oaks line the street.
  2. The table is solid oak.
  3. The cabinets are made of oak.

Illustration of OAK

Origin 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 Kids


noun \ˈōk\

Definition of OAK for Kids

:  a tree or shrub that produces acorns and has tough wood much used for furniture and flooring
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