1. An arm or branch of a tree, especially. A large arm or main branch.
2. A gallows.
Origin: oe. Bogh, as. Bog, boh, bough, shoulder; akin to Icel. Bogr shoulder, bow of a ship, Sw. Bog, dan. Bov, OHG. Buog, g. Bug, and to gr. (for) forearm, Skr. Bahu (for bhaghu) arm. Cf. Bow of a ship.