Webster's Revised Unabridged Dictionary · 1913

Bough

Bough ({not transcribed}) , noun

[Old English bogh, Anglo-Saxon bōg, bōh, bough, shoulder; akin to Icelandic bōgr shoulder, bow of a ship, Swedish bog, Danish bov, Old High German buog, German bug, and to Greek{not transcribed} ( for {not transcribed} ) forearm, Sanskrit bāhu (for bhāghu) arm. r88, 251. Compare Bow of a ship.]

1.
An arm or branch of a tree, esp. a large arm or main branch.
2.
A gallows. [Archaic] — Spenser