adjective. comprising or throughout far northern regions.
1. Noun, singular or mass Spruce and fir trees are typically found in the boreal forests that lie to the south of the tundra. 2. Adjective These pools have fast become a favorite of salt-craving, boreal inhabitants like moose, particularly in late spring and early summer, before the emergence of aquatic plants. 3. Verb, base form The edges of a pond ecosystem seem quite obvious, but the border between a tundra and boreal forest or a grassland and desert might overlap.