(a category falling within certain defined limits)
(either of two punctuation marks (`<' or `>') used in computer programming and sometimes used to enclose textual material)
(either of two punctuation marks ([ or ]) used to enclose textual material)
(a support projecting from a wall (as to hold a shelf))
(support with brackets; "bracket bookshelves")
(place into brackets; "Please bracket this remark")
(classify or group)