(of workers)giving help or support to the main group of workers
(of a piece of equipment)used if there is a problem with the main piece of equipment
(also auxiliary verb) a verb used with main verbs to show tense, etc. and to form questions and negatives; an auxiliary verb
a worker who gives help or support to the main group of workers
additional troops used by a country at war
"the main library and its auxiliary branches"
"an ancillary pump"
"an adjuvant discipline to forms of mysticism"
"The mind and emotions are auxiliary to each other"