Yes, mount is a Scrabble word!

Verb

1. Attach to a support

2. Go up or advance

3. Fix onto a backing, setting, or support

4. Put up or launch

5. Get up on the back of

6. Go upward with gradual or continuous progress

7. Prepare and supply with the necessary equipment for execution or performance

8. Copulate with

Noun

1. A lightweight horse kept for riding only

2. The act of climbing something

3. A land mass that projects well above its surroundings; higher than a hill

4. A mounting consisting of a piece of metal (as in a ring or other jewelry) that holds a gem in place

5. Something forming a back that is added for strengthening