1. mountaineering the activity of climbing a mountain
  2. mountain spinach Asiatic plant resembling spinach often used as a potherb
  3. mountain climbing the activity of climbing a mountain
  4. mountain pine tall pine of western North America with stout blue-green needles; bark is grey-brown with rectangular plates when mature
  5. mountain chain a series of hills or mountains
  6. maintenance activity involved in keeping something in good working order
  7. mountain ebony small East Indian tree having orchid-like flowers and hard dark wood
  8. mountain skink frequents oak and pine habitats in rocky mountainous areas of United States southwest and Mexico
  9. mountain range a series of hills or mountains
  10. mountain peak the summit of a mountain
  11. mountain bike a bicycle with a sturdy frame and fat tires
  12. mountain paca rodent of mountains of western South America
  13. mountain birch birch of western United States resembling the paper birch but having brownish bark
  14. melting point the temperature at which a solid turns into a liquid
  15. mountain anemone silky-foliaged herb of the Rocky Mountains with bluish-white flowers
  16. mountain avens creeping evergreen shrub with large white flowers
  17. maintainable capable of being maintained
  18. mountain sheep any wild sheep inhabiting mountainous regions
  19. out of keeping not in keeping with what is correct or proper
  20. landscaping working as a landscape gardener