Meaning

noun any of the larger branches of a tree

originPIE word *bʰeh₂ǵʰús From Middle English bough (“branch of a bush or tree, especially a main branch; limb of an animal or person; something resembling a branch (such as a plant root or branch of a nerve); (figuratively) Christian cross; descendant, offspring”) [and other forms], from Old English bōg, bōh (“tree bough or branch; arm; shoulder”), from Proto-West Germanic *bōgu, from Proto-Germanic…

Etymology from Wiktionary, CC BY-SA 3.0