n.1. Vulgar Slang A sodomite.
2. Slang A contemptible or disreputable person.
3. Slang A fellow; a chap: "He's a silly little bugger, then" John le Carré.
v. bug·gered, bug·ger·ing, bug·gers Vulgar Slang
v.intr.To practice sodomy.
v.tr.1. To practice sodomy with.
2. To damn.
Phrasal Verb:
bugger offChiefly British Slang To leave someone alone; go away.
[Middle English bougre, heretic, from Old French boulgre, from Medieval Latin Bulgarus; see Bulgar
http://www.thefreedictionary.com/bugger