Definitions for yeanyin
Random House Webster's College Dictionary
(of a sheep or goat) to bring forth young.
Origin of yean:
1375–1425; late ME yenen, OE *geēanian to bring forth young =ge-y - +ēanian to yean, akin to L agnus, Gk ámnos lamb
To give birth to.
to bring forth young, as a goat or a sheep; to ean