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arbor

1 American  
[ahr-ber] / ˈɑr bər /
especially British, arbour

noun

  1. a leafy, shady recess formed by tree branches, shrubs, etc.

  2. a latticework bower intertwined with climbing vines and flowers.

  3. Obsolete. a grass plot; lawn; garden; orchard.


arbor 2 American  
[ahr-ber] / ˈɑr bər /

noun

  1. 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.

    2. a beam, shaft, axle, or spindle.

  2. Metallurgy. a reinforcing member of a core or mold.


arbor 3 American  
[ahr-ber] / ˈɑr bər /

noun

Botany.

plural

arbores
  1. a tree.


arbor 1 British  
/ ˈɑːbə /

noun

  1. a rotating shaft in a machine or power tool on which a milling cutter or grinding wheel is fitted

  2. a rotating shaft or mandrel on which a workpiece is fitted for machining

  3. metallurgy a part, piece, or structure used to reinforce the core of a mould

"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

arbor 2 British  
/ ˈɑːbə /

noun

  1. the US spelling of arbour

"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

Other Word Forms

  • arboresque adjective

Etymology

Origin of arbor1

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 arbor 3

Origin of arbor2

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 arbor 3

Origin of arbor3

First recorded in 1660–70; from New Latin, Latin; arbor 2 ( def. )

Explanation

An arbor is a garden structure on which plants and vines can grow. Sitting under an arbor can help you cool off when you're strolling through a garden on a hot, sunny day. You may have come across the word arbor in the context of a garden structure, like a trellis or pergola. However, if you've heard of the holiday known as "Arbor Day," you know that an arbor is also a tree. These two meanings come from two different roots: the wooden arch type of arbor comes from the Latin herba, "grass or herb," while the tree arbor comes directly from the Latin arbor. Simply enough, it means "tree."

Keep Reading on Vocabulary.com

Vocabulary lists containing arbor

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Trees will be delivered with stakes, ties, arbor guards and an instructional DVD on tree planting and maintenance.

From Los Angeles Times • Sep. 26, 2024

“If you’re just planting it to climb on your porch or arbor, I think you’ll be disappointed; it will look like a weed,” he said.

From Seattle Times • Jan. 17, 2024

One-story homes of concrete or mud brick dot the landscape in pastel clusters, some with grape arbor vines climbing their roofs, interspersed with the occasional small school or mosque.

From New York Times • Feb. 14, 2023

Her brother, my great-uncle, tended a huge arbor of grapes outside their Bakersfield home.

From Los Angeles Times • Sep. 1, 2022

I took in the decorations: carved wooden lanterns and heavy painted scrolls hanging from the arbor terrace, screens with images of birds of paradise and other floral designs placed around the tables.

From "The Red Car to Hollywood" by Jennie Liu