the world > space > relative position > closed or shut condition > that which or one who closes or shuts > [noun] > that which closes an aperture > means of preventing passage of gas or liquid > for preventing water (2)
(a) something fixed or towed overboard to retard the motion of a ship; (b) a plug or other contrivance for making a joint watertight; (c) gen. (? nonc…
Building. Usually as one word. A watertight seal to prevent water from leaking through a joint; a substance used for this purpose.