Noah Webster
Auxiliar
AUXIL'IAR,
AUXIL'IARIES, noun plural Foreign troops in the service of nations at war.
AUXIL'IARY, noun
1. A helper; an assistant; a confederate in some action, enterprise or undertaking.
2. In grammar, a verb which helps to form the modes and tenses of other verbs; as, have, be, may, can, do, must, shall and will, in English.