See arbor.

ETYM AS. graf, from grafan to dig. The original sense seems to have been a lane cut through trees. Related to Grave, Groove.
1. A small cultivated wood without undergrowth; SYN. woodlet, orchard.
2. A small growth of trees without underbrush.

(Homonym: lie).
A strong solution of sodium or potassium hydroxide.
Strong alkaline solution, especially made from wood ashes; lixiviation solution.