BT BM 105a(36) :הא דמעילי תלתא כורי באוללא והא דמעילין חד כורא באוללא‏ : this (case) is where they bring three kors (of olives) at harvest; that one is where they bring one kor at harvest
See the entire entry for ˀwllˀ n.m.(f.?) harvest, gleaning (?)