arbor

1
[ ahr-ber ]
/ ˈɑr bər /

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.

Nearby words

  1. arbitrement,
  2. arbitrer,
  3. arbitress,
  4. arblay,
  5. arblay, d',
  6. arbor day,
  7. arbor vitae,
  8. arboraceous,
  9. arboreal,
  10. arboreally

Also especially British, ar·bour.

Origin of arbor

1
1350–1400; Middle English (h)erber < Anglo-French, Old French (h)erbier herbarium; respelling with -or under the influence of arbor3

arbor

2
[ 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
1650–60; respelling, by association with arbor3, of earlier arber, arbre < French, Old French < Latin arbor wooden beam or part in an olive press, tree

arbor

3
[ ahr-ber ]
/ ˈɑr bər /

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

a tree.

Origin of arbor

3
1660–70; < New Latin, Latin: tree.

Related formsar·bo·resque, adjective

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for arbor


British Dictionary definitions for arbor

arbor

1
/ (ˈɑːbə) /

noun

the US spelling of arbour

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

Word Origin and History for arbor

arbor

n.

c.1300, herber, "herb garden," from Old French erbier "field, meadow; kitchen garden," from Latin herba "grass, herb" (see herb). Later "a grassy plot" (early 14c., a sense also in Old French), "a shaded nook" (mid-14c.). Probably not from Latin arbor "tree," though perhaps influenced by its spelling.

The change from er- to ar- before consonants in Middle English also reflects a pronunciation shift: cf. farm from ferme, harbor from Old English herebeorg.

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine 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.