en_tn_lite_do_not_use/jdg/20/16.md

left-handed

A left-handed person is someone who is more skilled with their left hand than with their right hand.

could sling a stone at a hair and not miss

This show how amazingly well they could aim and hit their target. It can be stated in positive form. AT: "could throw a stone at even a hair and hit it" or "could throw a stone at something as small as a hair and hit it"