01 n. The state or relation of being a sister; the office or duty of a sister.
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1.
The state or relation of being a sister; the office or duty of a sister.“She . . . abhorr'd Her proper blood, and left to do the part Of sisterhood, to do that of a wife.” — Daniel.
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2.
A society of sisters; a society of women united in one faith or order; sisters, collectively.“The fair young flowers . . . a beauteous sisterhood.” — Bryant.