Origin: 1785–95; < Italian, feminine of ballerino professional dancer, probably equivalent to baller(ia) dance (ball(are) to dance (< Late Latin; see ball2) + -eria < Old French; see -ery) + -ino-ine1
1792, from It., lit. "dancing girl," fem. of ballerino "dancer," from ballo "a dance" (see ball (2)). The It. plural form ballerine formerly sometimes was used in Eng.