witness mark n. generally, an intentional, accidental, or naturally occurring spot, line, groove, or other contrasting area that serves as an indicator of certain facts; in geography and surveying, a blaze, cut, hole, paint splash, or message...
flowing volcano n.— «There were things I didn’t figure on, however. I never thought, by playing online games, that I could learn how to build something called a “flowing volcano,” which, apparently, is used—quite effectively—to smoke hash.» —“Reach...
stretcher n.— «The bricks laid longways are called stretchers; the bricks laid crossways, so that you can only see one end, are called headers. In English bond, the courses of stretchers and headers alternate. In Flemish bond, each course has...
rat-trap bond n.— «The southern and western walls of the building, which face the sun during the day, have been built using a type of masonry called the rat-trap bond. Popularised by the iconic architect Laurie Baker who died last week, this is a...
concretable n. a modular, portable building made of concrete. Editorial Note: A “concretable” is a type of “relocatable,” which is a modular, portable building made of any material. Etymological Note: concrete + portable (source: Double-Tongued...