- 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.
Origin of boughMiddle 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
Origin of boughMiddle English, from Old English bōh; see bhāghu- in Indo-European roots.
Middle English, from Old English bōg (“shoulder, bough”), from Proto-Germanic *bōguz (“upper arm, shoulder”) (compare German Bug (“shoulder, hock, joint”)), from Proto-Indo-European *bʰāǵʰus (“forearm, elbow”) (compare Ancient Greek πῆχυς (pēchys, “forearm”), Old Armenian բազուկ (bazuk, “arm, forearm, bough”), Persian بازو (bāzu, “upper arm”), Sanskrit बाहु (bahus, “arm”)).