A kind of user interface in literate programming, allowing calculations to be interspersed with human-readable comments, diagrams, etc.
A book in which notes or memoranda are written.
A similar compartment in a desk, used for sorting and storing papers.
A category.
One of an array of compartments for housing pigeons.
One of an array of compartments for receiving mail and other messages at a college, office, etc.
One of an array of compartments for storing scrolls at a library.
To categorize; especially to limit or be limited to a particular category, role, etc.
To put aside, to not act on (proposals, suggestions, advice).