: 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.
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And in her son’s room (not shown), her Hecho en Tejas wallpaper features watercolor interpretations of Lone Star State icons, from javelinas to knobby oak trees.—Betsy Cribb Watson, Southern Living, 14 Apr. 2025 Autumn is my favorite season in Cuyahoga Valley, as the oaks, hickories, and maples explode with fall colors.—Stephanie Vermillion, Travel + Leisure, 13 Apr. 2025 Neither does the oak, even after almost 25 years, although that small amount of virgin oak barrels in the mix adds a splash of vibrant wood to the flavor profile.—Jonah Flicker, Robb Report, 13 Apr. 2025 Aged for three years in oak barrels, El Dorado 3 Year has notes of caramel, coconut, and a hint of spice, which blend beautifully with the tropical ingredients.—Emily Price, Forbes.com, 11 Apr. 2025 See All Example Sentences for oak
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
Time Traveler
The first known use of oak was
before the 12th century
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