"lefties" in the noun sense
1. left-hander, lefty, southpaw
a person who uses the left hand with greater skill than the right
"their pitcher was a southpaw"
2. left-handed pitcher, left-hander, left hander, lefthander, lefty, southpaw
a baseball pitcher who throws the ball with the left hand
Source: WordNet® (An amazing lexical database of English)
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