Lewis & Short

ălăbaster, tri, m. (plur. also ălăba-stra, n.), = ἀλάβαστρος, plur. -ρα.

  1. I. A box or casket for perfumes, tapering to a point at the top, a box for unguents: alabaster plenus unguenti, * Cic. Ac. Post. ap. Non. 545, 15: mulier habens alabastrum unguenti, Vulg. Matt. 26, 7; ib. Marc. 14, 3; ib. Luc. 7, 37: redolent alabastra, Mart. 11, 8, 9; Plin. 13, 2, 3, § 19.
    Hence,
  2. II. The form of a rose-bud, pointed at the top: in virides alabastros fastigato, Plin. 21, 4, 10, § 14.