(Judg. 3:15; 20:16), one unable to use the right hand skilfully, and who therefore uses the left; and also one who uses the left as well as the right, ambidexter. Such a condition of the hands is due to physical causes. This quality was common apparently in the tribe of Benjamin.
Left-Handed
2 verses
Judges
Judges 3:15
But when the children of Israel cried unto the LORD, the LORD raised them up a deliverer, Ehud the son of Gera, a Benjamite, a man lefthanded: and by him the children of Israel sent a present unto Eglon the king of Moab.
Judges 20:16
Among all this people there were seven hundred chosen men lefthanded; every one could sling stones at an hair breadth, and not miss.
From Easton's Bible Dictionary
Matthew George Easton, 1897