Lewis & Short

crētārĭus, a, um, adj. [2. creta],

  1. I. of or pertaining to chalk: ARS, Inscr. Grut. 641, 3.
  2. II. Subst.: crētārĭa, ae, f. (sc. taberna), a shop for Cretan earth, Varr. L. L. 8, § 55 Müll.