(Also as two words.) [TWIN a. 3.] A sister born at the same birth, as one of twins. Also fig. (Cf. TWIN-BROTHER.)
1707. Norris, Treat. Humility, v. 213. Humility … with its twin-sister meekness.
a. 1721. Prior, Colin’s Mistakes, x. Twin Sisters still were Ignorance and Pride.
1798. Wordsw., Peter Bell, Prol. xvi. A Boat twin-sister of the crescent-moon.
1884. W. G. Horder in Chr. World Pulpit, 12 Nov., 311/1. Music is twin-sister to poetry.
1885. Miss Braddon, Wyllard’s Weird, i. Twin sisters who had loved each other with more than common love.
Hence Twin-sisterhood, the relation of twin sisters.
1824. Miss Mitford, Village, Ser. I. (1863), 164. Never was the … tie of twin-sisterhood more closely knit than in these two charming young women.
