[noun] [U] - (part of) the very large area of land in N Asia, N America and N Europe where, because it is cold, trees do not grow and earth below the surface is permanently frozenReindeer roam the tundra in large herds.Few plants grow in tundra regions.
TUNDRA
Meaning of TUNDRA in English
Cambridge English vocab. Кембриджский английский словарь. 2012