- brack•et[[t]ˈbræk ɪt[/t]] n.1) archit. cv a supporting piece, oftenL- or scroll-shaped, projecting from a wall or the like to bear the weight of a shelf, cornice, etc., or to reinforce the angle between two members2) bui a shelf or shelves so supported3) archit. a wall fixture for holding a lamp, clock, telephone, etc4) priAlso called square bracket one of two marks, or, used in writing or printing to enclose parenthetical matter, interpolations, etc.5) math. Math.a) brackets, parentheses of various forms indicating that the enclosed quantity is to be treated as a unitb) (loosely)vinculum 2)6) soc a class, division, or grouping, as of persons in relation to their income or age7) a projecting fixture for gas or electricity8) mil gun range or elevation producing both shorts and overs on a target9) bui to furnish with or support by a bracket or brackets10) bui cv to place within brackets11) to associate, mention, or class together:The problems were bracketed together[/ex]12) mil to place (gunshots) both beyond and short of a target13) pht to photograph (additional shots) at exposure levels above and below the estimated correct exposure•Etymology: 1570–80; earlier also brag(g)et (in architecture)
From formal English to slang. 2014.