Lewis Short
(adjective) : zygĭa, ae, f., = ζυγία (prop. an from ζύγιος, belonging to or fit for yokes).
* A tree, called also carpinus, horn-beam: Carpinus betulus, Linn.; Plin. 16, 15, 26, § 67.
* Zygia tibia, a nuptial or marriage flute, App. M. 4, p. 157, 37.
Charlton T. Lewis, Charles Short, A Latin Dictionary