LATIN DICTIONARYLexicon Latīnum
noun

arbī^trātor

Meaning

  1. a master

arbī^trātor, ōris, m. id., in late Lat. = arbiter, II. B.,
I. a master, ruler, lord: JVPPITER ARBITRATOR, Inscr. Gud. 7, 5.—Hence a place in the tenth district at Rome is called Pentapylon Jovis arbitratoris, Publ. Victor. Reg. 10.

Quick answers

What does arbī^trātor mean in Latin?
arbī^trātor, a noun, means “a master”.