PTHal 58.d:1[2] :קבייא באתריה{ון} רובעיא {אזדרעון}<אזדערון> ויאמר‏ : the qabs in his place became smaller by a fourth
See the entire entry for zˁr vb. to be(come) small

PTHal 58.d:1[2] :קבייא‏ :
See the entire entry for qaḇ, qabbā n.m. a dry measure