sisters

From WikiWord, the free dictionary

/ˈsɪstəz/ English

Definitions

A daughter of the same parents as another person; a female sibling.“My sister is always driving me crazy.”
A 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.”
Any butterfly in the genus Adelpha, so named for the resemblance of the dark-colored wings to the black habit traditionally worn by nuns.
A senior or supervisory nurse, often in a hospital.

To strengthen (a supporting beam) by fastening a second beam alongside it.“I’m trying to correct my sagging floor by sistering the joists.”
To be sister to; to resemble closely.