קָטָרַקְטִין, (not טון …) m. (καταράκτης, S.) a kind of sluice or trap-door. Gen. R. s. 31 כמין ק׳ היה לו וכ׳ he (Noah in the ark) had a sort of trap-door, through which he shovelled &c., v. פָּסַס; Yalk. ib. 54 טרקלין (corr. acc.).