Sister word meaning and definition

[noun] (slang) sometimes used as a term of address for attractive young women
[noun] a female person who is a fellow member of a sorority or labor union or other group; "none of her sisters would betray her"
[noun] (Roman Catholic) a title given to a nun (and used as a form of address); "the Sisters taught her to love God"
[noun] a female person who has the same parents as another person; "my sister married a musician"

\Sis"ter\, n. [OE. sister, fr. Icel. systir; also suster, from AS. sweostor, sweoster, swuster, akin to OFries. sweester, suster, LG. s["u]ster, suster, D. zuster, OS. & OHG. swestar, G. schwester, Icel. systir, Sw. syster, Dan. s["o]ster, Goth. swistar, Lith. ses?, Russ. sestra, Pol. siostra, L. soror, Skr. svasr. [root]298. Cf. {Cousin}.] 1. 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. I am the sister of one Claudio. --Shak. 2. A woman who is closely allied to, or assocciated with, another person, as in the sdame faith, society, order, or community. --James ii. 15. 3. One of the same kind, or of the same condition; -- generally used adjectively; as, sister fruits. --Pope. {Sister Block} (Naut.), a tackle block having two sheaves, one above the other. {Sister hooks}, a pair of hooks fitted together, the shank of one forming a mousing for the other; -- called also {match hook}. {Sister of charity}, {Sister of mercy}. (R. C. Ch.) See under {Charity}, and {Mercy}.
\Sis"ter\, v. t. To be sister to; to resemble closely. [Obs.] --Shak.

Morse code: ... .. ... - . .-.