Definition of "Bracket" :

noun: a support projecting from a wall (as to hold a shelf)

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

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

noun: a category falling within certain defined limits

verb: classify or group

verb: place into brackets

"Please bracket this remark."

verb: support with brackets

"Bracket bookshelves."