See the entire entry for bḏeq, biḏqā n.m. breech

BT Ḥul 105a(41) :צינורא דבידקא : a channel of a sluice

See the entire entry for ṣennōr, ṣennōrā n.m. canal

BT Ḥul 105a(41) :חזא שקא צינורא דבידקא בארעיה : one day he saw the erosion of a broken sluice in his field

See the entire entry for ṣnwr n.m. hollow cylinder