Mount'ain-oŭs, a.

(mount'in-us), a. [Fr. montagneux, Sp. mantañoso, It. montagnoso, Lat. montaniosus.]

1. Full of mountains; as, the mountainous country of the Swiss.
2. Large as a mountain; huge; as, a mountainous heap. Prior.
3. Inhabiting mountains. [Obs.] Bacon.