Meaning

noun a category falling within certain defined limits

noun either of two punctuation marks (`<' or `>') used in computer programming and sometimes used to enclose textual material

noun either of two punctuation marks ([ or ]) used to enclose textual material

originFrom earlier bragget, *bracket, from Middle English *braget, *braket (attested in braket nail), from Old French braguette (“the opening in the fore part of a pair of breeches, one's fly”), a diminutive of Old French brague (“knickers, britches”), from Old Occitan braga, from Latin brāca (“pants”), from Transalpine Gaulish *brāca, from Proto-Germanic *brāks, an early form of Proto-Germanic *brōks…

Etymology from Wiktionary, CC BY-SA 3.0