Ugaritic

bn - son (DUL 224)

PS
*bin- - son (Kogan 2014: 89, Kogan 2015: 398)
Akkadian reflexes of *bin- (binu, bintu and bunu, buntu in AHw. 127, 138) are so marginal that make one suspect a WS import (Kogan 2011: 235).