Yes, tramp is a Scrabble word!

Verb

1. Travel on foot, especially on a walking expedition

2. Walk heavily and firmly, as when weary, or through mud

3. Cross on foot

4. Move about aimlessly or without any destination, often in search of food or employment

Noun

1. A disreputable vagrant

2. A person who engages freely in promiscuous sex

3. A foot traveler; someone who goes on an extended walk (for pleasure)

4. A heavy footfall

5. A commercial steamer for hire; one having no regular schedule

6. A long walk usually for exercise or pleasure