BT Git 60b(46) :דשנ̇ו̇{{י}}^ו^תא‏ :
See the entire entry for šwny n.f. sea wall; diversionary canal

BT Git 60b(46) :בריש נהרא דשנ̇ו̇{{י}}^ו^תא‏ : at the top of the diversionary canal
See the entire entry for šunnāy, šunnāyā v.n.D removal, diversion