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arbor

1
[ ahr-ber ]
/ ˈɑr bər /
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noun
a leafy, shady recess formed by tree branches, shrubs, etc.
a latticework bower intertwined with climbing vines and flowers.
Obsolete. a grass plot; lawn; garden; orchard.
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Also especially British, ar·bour .

Origin of arbor

1
First recorded in 1300–50; Middle English (h)erber, erba(i)re, arbere “(flower) garden, pleasure garden, herb garden,” Anglo-French (h)erber, Old French (h)erbier “grassy place, herb garden”; respelling with -or under the influence of arbor3

Other definitions for arbor (2 of 3)

arbor2
[ ahr-ber ]
/ ˈɑr bər /

noun
Machinery.
  1. a bar, shaft, or axis that holds, turns, or supports a rotating cutting tool or grinding wheel, often having a tapered shank fitting tightly into the spindle of a machine tool.Compare mandrel.
  2. a beam, shaft, axle, or spindle.
Metallurgy. a reinforcing member of a core or mold.

Origin of arbor

2
First recorded in 1650–60; from French, arbre “tree, axis,” from Latin arbor “tree, mast, (spear) shaft, oar”; respelling of earlier arber, arbre by association with arbor3

Other definitions for arbor (3 of 3)

arbor3
[ ahr-ber ]
/ ˈɑr bər /

noun, plural ar·bo·res [ahr-buh-reez]. /ˈɑr bəˌriz/. Botany.
a tree.

Origin of arbor

3
First recorded in 1660–70; from New Latin, Latin; see also arbor2

OTHER WORDS FROM arbor

ar·bo·resque, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use arbor in a sentence

British Dictionary definitions for arbor (1 of 2)

arbor1
/ (ˈɑːbə) /

noun
the US spelling of arbour

British Dictionary definitions for arbor (2 of 2)

arbor2
/ (ˈɑːbə) /

noun
a rotating shaft in a machine or power tool on which a milling cutter or grinding wheel is fitted
a rotating shaft or mandrel on which a workpiece is fitted for machining
metallurgy a part, piece, or structure used to reinforce the core of a mould

Word Origin for arbor

C17: from Latin: tree, mast
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for arbor

arbor
[ ärbər ]

n. pl. ar•bo•res (ärbə-rēz′)
A treelike anatomical structure.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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