the US spelling of arbour
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
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.
arbor ar·bor (är’bər)
n. pl. ar·bo·res (är’bə-rēz’)
A treelike anatomical structure.
a plot of land on which many different trees or shrubs are grown for study or display. Historical Examples Well, to-morrow we can go to see them; in the arboretum at the foot of the big Monterey pine. Insect Stories Vernon L. Kellogg Including the arboretum, their total area did not then exceed 11 acres. […]
the cultivation of trees and shrubs. Historical Examples And I am not at all angry because you sing us the same old song about the English ploughs and arboriculture and silviculture. Dona Perfecta B. Perez Galdos He has not lived in vain, for he is a tree planter and believes in arboriculture. Seed Dispersal William […]
a variety of cultivated short-grain rice with a high starch content: used especially for risotto.
- Arborio rice
noun a variety of round-grain rice used for making risotto noun short-grain, high-starch, white Italian rice which becomes fat and creamy when cooked and is used for risotto Examples Arborio rice cooks best when constantly stirred. Word Origin After Arborio, town in the Po valley in Italy where the rice is grown Usage Note cooking