BT BB 121b(12) :יום תבר מגל‏ : the day of the breaking of a sickle
See the entire entry for maggal, maggəlā n.f. sickle

BT BB 121b(12) :יום תבר מגל‏ : the day of the breaking of a sickle
See the entire entry for tḇār, tḇārā v.n. fracture, breaking