Definitions
1.nounA daughter of the same parents as another person; a female sibling."My sister is always driving me crazy."
2.nounA female member of a religious order; especially one devoted to more active service; (informally) a nun."Michelle left behind her bank job and became a sister at the local convent."
3.nounAny butterfly in the genus Adelpha, so named for the resemblance of the dark-colored wings to the black habit traditionally worn by nuns.
4.nounA senior or supervisory nurse, often in a hospital.
5.nounAny woman or girl with whom a bond is felt through common membership of a race, profession, religion or organization, such as feminism."Connie was very close to her friend Judy and considered her to be her sister."
6.noun(sometimes capitalized) A black woman.
7.nounA form of address to a woman."What’s up, sister?"
8.nounA woman, in certain labour or socialist circles; also as a form of address."Thank you, sister. I would like to thank the sister who just spoke."
9.nounAn entity that has a special or affectionate, non-hierarchical relationship with another."sister city"
10.nounA node in a data structure that shares its parent with another node.
11.noun(usually attributively) Something in the same class."sister facility"
12.verbTo strengthen (a supporting beam) by fastening a second beam alongside it."I’m trying to correct my sagging floor by sistering the joists."
13.verbTo be sister to; to resemble closely.