- The definition of a bough is the branch of a tree.
An example of bough is the branch of a cherry tree.
A childs hands hanging from the bough of a tree.
bough definition by Webster's New World
Origin: Middle English ; from Old English bog, shoulder or arm, hence twig or branch ; from Indo-European an unverified form bhāgus, elbow and forearm from source bow
bough definition by American Heritage Dictionary
Origin: Middle English, from Old English bōh; see bhāghu- in Indo-European roots.