Lewis & Short

Mătīnus, i, m., a mountain or promontory in Apulia, near the foot of Mount Garganus, now Matinata, Luc. 9, 185; Schol. Cruq. ad Hor. C. 1, 28, 3.
Hence,

    1. 1. Mă-tīnus, a, um, adj., of or belonging to Mount Matinus, Matinian: apis Matinae More, Hor. C. 4, 2, 27: litus, id. ib. 1, 28, 3: cacumina, id. Epod. 16, 28.
    2. 2. Mătīnus, i, m., a mountain in Apulia Daunia, Luc. 9, 185.