ar ‧ bour BrE AmE British English , arbor American English /ˈɑːbə $ ˈɑːrbər/ noun [countable]
[ Date: 1300-1400 ; Language: Old French ; Origin: herbier 'area of grass' , from herbe 'herb, grass' ]
a shelter in a garden made by making plants grow together on a frame shaped like an ↑ arch