BT Ket 17a(48) :כגון דחייצי גברי מאבולא עד סיכרא‏ : if, for instance, the men form a partition from the city gate to the ...
See the entire entry for ˀăḇul, ˀăḇullā n.m. city gate; large opening in a wall

BT Ket 17a(48) :כגון דחייצי גברי מאבולא עד סיכרא‏ : as when men make a connecting wall(?) from the city gate to the dam
See the entire entry for ḥwṣ#2 vb. to connect with a partition