sister

/ˈsɪs.tə/noun

A girl or woman who has the same parents as another person.

Example sentences

“Her younger sister borrows her clothes all the time.”
“My sister and I shared a bedroom until I was twelve.”

Also a title for a nun, and in British hospitals a senior nurse.

Related words

brotherA male child of the same mother and father as someone else.fatherA man who has a child, whether by birth, adoption, fostering, or raising the child as his own.daughterA person's female child.motherA woman who has a child, whether by giving birth, adopting, or fostering; a female parent.grandmotherThe mother of your mother or father.grandfatherThe father of your mother or father.