A naval officer whose rank is higher than a lieutenant and below that of a commander.

Alternative letter-case form of wing commander (found when the term is used as a title).

(military) A specific unit assigned to a division that is the headquarters for one or more trains.

plural of lieutenant commander

Somebody ranking next below a commander. / Someone ranking next below the person in charge.

Alternative spelling of second-in-command

Alternative spelling of commander in chief

The conscious control of one's own behaviour.

A shell, a command line interface; usually used with the definite article. / (computing) The text prompt presented to the user in a command line interface.

plural of command line