Lewis & Short

ollārĭus, a, um, adj. [olla],

  1. I. of or belonging to pots, pot- (post-Aug.), Plin. 34, 9, 20, § 98: ‡ fusor, a pot-founder, pot caster, Inscr. Grut. 630, 9.
  2. II. Subst.: ‡ ollārĭ-um, ĭi, n., the receptacle for the jars of ashes in tombs, Inscr. Fabr. p. 13, n. 60; cf. Fabr. p. 10 sq.