(1):
(v. t.) To be sister to; to resemble closely.
(2):
(n.) One of the same kind, or of the same condition; - generally used adjectively; as, sister fruits.
(3):
(n.) A woman who is closely allied to, or assocciated with, another person, as in the sdame faith, society, order, or community.
(4):
(n.) A female who has the same parents with another person, or who has one of them only. In the latter case, she is more definitely called a half sister. The correlative of brother.