PTMQ 83.d:42[2] :עבדון לון איבריה‏ : they made a festive meal for themselves
See the entire entry for ˀaḇrayyā n.f. festive meal

PTMQ 83.d:42[2] :בריש ירחא דניסן‏ : the beginning of the month of Nisan
See the entire entry for nīsān n.m. Nisan (March/April)