ETYM Cf.Old Fren. braguette codpiece, French brayette, Spanish bragueta, also a projecting mold in architecture; dim. fromL. bracae breeches; cf. also, Old Fren. bracon beam, prop, support; of unknown origin. Related to Breeches.
1. A category falling within certain defined limits.
2. An L-shaped support projecting from a wall (as to hold a shelf).
3. Either of two punctuation marks ([ or ]) used to enclose textual material; SYN. square bracket.

1. To classify or group.
2. To place into brackets; SYN. bracket out.
3. To support with brackets, as of shelves, for example.
Synonym for parenthesis.