Definition from Wiktionary, the free dictionary
lefty (plural lefties)
- (US) One who is left-handed.
- (Britain) One who has left-wing political views.
- (slang) One's left testicle.
- I'll be my lefty he won't show up for work today.
left-hander — see left-hander
lefty (not comparable)
- (US) Left-handed.
- (US) Intended for left-handed use.
- The lefty scissors are the ones with the red plastic handles.
- (Britain) Left-wing.