auxiliary

Helping; giving assistance or support.

auxiliary troops

Supplementary or subsidiary.

Held in reserve for exceptional circumstances.

Of a ship, having both sails and an engine.

Relating to an auxiliary verb.

A person or group that acts in an auxiliary manner.

Auxiliaries and ancillaries are comprehensive, and include a Westinghouse motor-driven recriprocating compressor used for locomotive braking and general service air, two rotary exhauster sets for train brakes when hauling passenger or fitted freight trains, and an oil-fired train heating boiler.

A drive to exploit the Highlands as a winter sports area, with all the necessary auxiliaries, such as chair lifts in the Cairngorms, shows increasing promise, […].

A sailing vessel equipped with an engine.

Ellipsis of auxiliary verb.

The three traditionally recognized Non-modal Auxiliaries are the per- fective Auxiliary have, the progressive Auxiliary be, and the passive Auxiliary be. Perfective have is so-called because it marks the completion (hence, perfec- tion) of an action; it is followed by a VP headed by a perfective -n participle, as in: (121) The referee has [_(VP) shown him the red card]

A marching band color guard.