oak

noun

ˈōk 

plural oaks or oak

often attributive

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

Illustration of oak

• 1 acorn
• 2 leaf

Examples of oak in a Sentence

Tall oaks line the street.

The table is solid oak.

The cabinets are made of oak.

Recent Examples on the Web

Leave a comment View Comments Also borrowing from nature is landscape architect Tom Stuart-Smith, whose proposal incorporates a replica of a centuries-old oak tree from Windsor Great Park, once the private hunting grounds of the late Queen’s former residence, Windsor Castle. —Rosa Rahimi, CNN Money, 9 May 2025

Tasting Notes: Brown sugar, vanilla, and toasted oak, with a hint of orange peel. —Emily Price, Forbes.com, 8 May 2025

The Napa cabernet maker is currently willing to pay $1,000 a barrel for one made of French oak. —The Editorial Board, Oc Register, 8 May 2025

Mast year occurrences vary by species and seem to be common among oak trees. —Stephen Underwood, Hartford Courant, 5 May 2025

Word History

Etymology

Middle English ook, oke, going back to Old English āc, going back to Germanic *eik- (whence also Old Frisian ēk "oak," Old Saxon ēc, Old High German eih, eihha, Old Norse eik), of obscure origin

Note: Old English āc is a feminine root noun (dative singular and nominative plural ǣc), though forms leveled to other declensions with umlaut are already evident. Germanic *eik- has been compared with the Greek words aigílōps, a name in Theophrastus for a species of oak (Quercus macrolepis?), and krátaigos, a species of hawthorn (also in Theophrastus), but interpretation of the conjoined elements of these words is conjectural (lṓpē is not actually attested in the sense "cork" or "bark"). The derivation of Latin aesculus "a species of oak (Quercus petraea?)" is obscure. The Lithuanian dialect forms áižuols and áužuolas "oak," superficially comparable, are hypercorrections of ą́žuolas, which is very unlikely to be related to *eik- (cf. Old Prussian ansonis = German eche in the Elbing Vocabulary).

First Known Use

before the 12th century, in the meaning defined at sense 1a

Phrases Containing oak

• bur oak
• chestnut oak
• chinquapin oak
• cork oak
• durmast oak
• evergreen oak
• holm oak
• live oak
• oak apple
• oak-leaf cluster
• oak wilt
• pin oak
• poison oak
• post oak
• red oak
• scrub oak
• she-oak
• silk oak
• tan oak
• turkey oak
• water oak
• white oak

Rhymes for oak

• bloke
• boeck
• broke
• choke
• cloak
• cloke
• croak
• folk
• hoke
• joke
• moke
• poke

Kids Definition

oak

noun

ˈōk 

plural oaks or oak

1

: any of various trees or shrubs closely related to the beeches and chestnuts and producing acorns

2

: the tough hard wood of the oak much used for furniture and flooring

oaken

ˈō-kən 

adjective