Moun"tain*ous (?), a. [F. montagneux, L. montaniosus.]
1.
Full of, or containing, mountains; as, the mountainous country of the Swiss.
2.
Inhabiting mountains.
[Obs.]
Bacon.
3.
Large as, or resembling, a mountain; huge; of great bulk; as, a mountainous heap.
Prior.
© Webster 1913.