D defs.my
Entry 1 sense Webster, 1913

Ancillary

/ăn'-səl-ĕrˌ-ē/ · An·cil·la·ry · IPA /ˈæn.səˌlɛɹ.i/
01 a. Subservient or subordinate, like a handmaid; auxiliary.
  1. 1.
    Subservient or subordinate, like a handmaid; auxiliary.
    “The Convocation of York seems to have been always considered as inferior, and even ancillary, to the greater province.” Hallam.