Definitions for "lefty"
a person who uses the left hand with greater skill than the right; a left-handed person.
a baseball pitcher who throws the ball with the left hand.
(slang) left-hand opponent.
Lefty (, Levsha) is a 1964 feature-length cutout-animated film from the Soviet Union. The film is based on the story of the same name by the 19th century Russian novelist Nikolai Leskov. It was directed by the "Patriarch of Soviet animation", Ivan Ivanov-Vano, at the Soyuzmultfilm studio.
Lefty is a class of proteins that belongs to the TGF beta superfamily of proteins. It regulates TGFβ. It is involved in embryogenesis and left-right patterning.
Keywords:  pretty, good, option
a pretty good option