Douglas Harper's Etymology Dictionary
right wing
1570s of armies; from 1882 in football; 1905 in the political sense (compare left wing). Right-winger attested by 1919 in U.S. politics, 1895 in sports.
Wiktionary
right wing
n. 1 (context politics English) the more right-wing faction of a group or party 2 (context sports English) the right-hand side of a sports field 3 (context ice hockey English) the offensive player who plays to the center's right
WordNet
right wing
n. those who support political or social or economic conservatism; those who believe that things are better left unchanged [syn: right]