Lewis & Short

augùrālis (augŭrĭālis, App. Not. Aspir. § 8), e, adj. [augur].

  1. I. Of or belonging to augurs, relating to soothsaying or prophecy, augurial: libri, Cic. Div. 1, 33, 72; id. Fam. 3, 4; cf. Müll. Etrusk. 1, p. 122: jus, Cic. Brut. 77, 267: cena, which the augur gave on his entrance into office, Varr. R. R. 3, 6, 6, Cic. Fam. 7, 26: insignia, Liv 10, 7: sacerdotium, Suet. Claud. 4; id. Gram. 12: verbum, Gell. 6, 6, 4.
    Hence,
  2. II. Subst.: augŭrāle, is, n.
    1. A. A part of the headquarters of a Roman camp, where the general took auguries: structam ante augurale aram, Tac. A. 15, 30: egressus augurali, id. ib. 2, 13.
      Hence (pars pro toto), the principal tent: tabernaculum ducis, augurale, Quint. 8, 2, 8.
    2. B. The augur’s wand or staff = lituus, Sen. Tranq. 11.