lowland, n. & adj.
--n.
1 (usu. in pl.) low-lying country.
2 (Lowland) (usu. in pl.) the region of Scotland lying south and east of the Highlands.
--adj. of or in lowland or the Scottish Lowlands.
Derivative
lowlander n. (also Lowlander).
Also see definition of "lowland" in Bible Study Dictionaries