BT Šab 110b(19) :לייתי ביעתא דנעמיתא‏ : let him bring an ostrich egg
See the entire entry for ˀty vb. to come, arrive

BT Šab 110b(19) :ביעתא דנעמיתא‏ : an ostrich egg
See the entire entry for nˁmy n.f. ostrich