keelfat

[English keel (2), v., and Mid. Eng. fat =vat.] Brewing : A cooler for wort, . keel-hâul, keel-hale, v. t. [O. Dut. kielhaalen; Dut. kielhalen =to careen a ship; to keelhaul.] Naut.: To punish in the seamen's way by dragging the offender under water on one side of the ship and up again on the other by ropes attached to the yard-arms on either side. In small ve els the culprit is drawn under the craft from stem to stern. and boilers of steamships.