lefty

Short definition from Wiktionary

Noun

1. 1
   One who is left-handed.
2. 2
   One who has left-wing political views.
3. 3
   One's left testicle.
4. 4
   One's left hand.

Adjective

1. 1
   Left-handed.
2. 2
   Intended for left-handed use.
3. 3
   Left-wing.