Lewis & Short

prīmĭpīlāris or prīmōpīlāris, e, adj. [primipilus].

      1. 1. Of or belonging to the first maniple of the triarii, primipilar (postAug.): honor primipilaris, Fragm. Jur. Rom. Vat. 278 Huschke.
      2. 2. (Vid. II. 2. infra.) Of or belonging to a commissary (post-Aug.): species, Cod. Just. 12, 58, 8.
  1. II. Subst.: prīmĭpīlāris, is, m. (sc. centurio), the captain or centurion of this company (postAug.): cessit primipilari, Sen. Const. 18, 4; Tac. H. 2, 22; 4, 15: testamenta primipilarium, Suet. Calig. 38; Inscr. Orell. 517; 748; 3568; Fragm. Jur. Rom. Vat. 141; 143 Huschke.
    1. B. Transf.
      1. 1. One who has been primipilaris, an ex-primipilar, Quint. 6, 3, 92.
      2. 2. (Post-Aug.) A commissary, Dig. 32, 1, 38, § 4; 50, 5, 18, § 24; Cod. Th. 8, 4, 6.
      3. 3. In eccl. Lat., a bishop: conclamatissimus primipilaris, Sid. Ep. 6, 1.