a support projecting from a wall (as to hold a shelf) | any number of entities (members) considered as a unit |
either of two punctuation marks ([ or ]) used to enclose textual material | a set that is closed, associative, has an identity element and every element has an inverse |
either of two punctuation marks (`<' or `>') used in computer programming and sometimes used to enclose textual material | (chemistry) two or more atoms bound together as a single unit and forming part of a molecule |
a category falling within certain defined limits | |