(programming) A string of characters that is a verb, command, or other part of a programming language, and therefore cannot be used as the name of a variable, constant, function, or procedure.

plural of reserved case

(Christianity) A sin that can only be absolved by the pope or his legate etc.

(historical) A list of officers on half pay who could be called upon in an emergency.

plural of reserved list

The owner of a work, or other copyright holder, releases the work into public domain.

On a tramway, a section of track which is not laid in a street. The track can be on an alignment alongside the street or road, or follow the alignment of an old railway.

plural of reserved track

plural of reserved word

(idiomatic, law) The copyright holder of a creative work reserves all copyright-related rights, typically including the right to publish the work, to make derivative works of it, to distribute it, to make profit from it, to license a number of these rights to other people, and to forbid these uses by any unauthorized people, thus being entitled to take legal action against infringement.