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Definition of arbor

arbor

/ˈɑːr.bɚ/
(UK: arbour)
ar · bor

Plural:arbors
•
Adjective:arboreal
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arbor Lexical Profile

arbor Game Scores & Validity

• noun

1

American A shady garden alcove or walk enclosed by trees, shrubs, or climbing vines trained over a latticework frame.

Example

"The couple exchanged their vows beneath a wooden arbor covered in blooming white roses."


2

A main rotating shaft, spindle, or axle in a machine tool that holds or drives a cutting tool or grinding wheel.

Example

"The machinist carefully mounted the circular saw blade onto the arbor before starting the motor."


3

A tree-like branching structure, especially of nerve fibers or dendrites in anatomy.

Example

"Under the microscope, the intricate dendritic arbor of the neuron resembled the branches of an ancient oak."

Synonyms
View all synonyms for arbor

• Rhymes for arbor

Word Origin & Etymology

The garden sense derives from Middle English erber, from Old French herbier ('herb garden'), from Latin herba ('grass, herb'), later altered in spelling by association with Latin arbor ('tree'). The mechanical sense comes from French arbre ('beam, shaft'), directly from Latin arbor.

Cite this Entry


Wordmom. (2026). Definition of Arbor. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/arbor
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