Lewis Short
prīmātus (noun M) : primas
* The first place or rank, preference, pre-eminence, primacy (ante-class. and in post-Aug. prose): alii dant primatum bonis pratis,Varr. R. R. 1, 7, 10: primatum obtinere apud regem,Plin. 24, 17, 102, § 165: donare aliquem primatu,id. 8, 5, 5, § 12; 13, 12, 24, § 79 (opp. secundatus).
Charlton T. Lewis, Charles Short, A Latin Dictionary