Southpaw

• Sinister operative dropped off components for her
• Abandoned woman's going around with one having sinister tendency
• Randy Johnson, e.g

Wiktionary Word definitions in Wiktionary
n. (alternative spelling of left-hander English)

WordNet Word definitions in WordNet
n. a baseball pitcher who throws the ball with the left hand [syn: left-handed pitcher , left-hander , left hander , lefty , southpaw ]

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
lefthander \left`hand"er\, left-hander \left`-hand"er\n. a person who uses the left hand with greater skill than the right; a left-handed[1] person. Syn: lefty, southpaw.