Citations:milk sister

Noun: "a female milk sibling"

 * 1983 — Pamela Kaufman, The Shield of the Three Lions, Three Rivers Press (2002), ISBN 0609809466, page 2:
 * Yet the dame had once been full, had fed both Maisry and me when we were babes, making us milk sisters.
 * 2007 — Jenny Erpenbeck, The Book of Words (trans. Susan Bernofsky), New Directions (2007; original German novel published 2004), ISBN 9780811217064, page 46:
 * In this shop, I always used to play hide-and-seek with Marie, my wet nurse's daughter, who in fact is my milk sister,
 * 2009 — Morgan Clarke, Islam and New Kinship: Reproductive Technology and the Shariah in Lebanon, Berghahn Books (2011), ISBN 9781845454326, pages 42-43:
 * Milk nieces, milk aunts, milk daughters, milk grandmothers and milk granddaughters are all forbidden in marriage, as are the milk mother of one's wife, and simultaneous marriage to two women who are milk sisters