Lewis & Short

lŏcārĭus, a, um, adj. [loco], of or belonging to letting; hence, substt.

  1. I. lŏcārĭus, ii, m., one who first took possession of a seat in the theatre and let it out to one who came later: Hermes, divitiae locariorum, a famous gladiator, who filled the theatre, and thus brought much gain to those who parted with their seats for hire, Mart. 5, 24, 9.
  2. II. lŏcārĭum, ii, n., rent paid for a stall to sell goods from, stall-money, stallage, Varr. L. L. 5, § 15 Müll.