noun

sister

sister, nun

I have one older sister.

I have one older sister.

She became a sister at the local convent.

She became a sister at the local convent.

The sister will check your blood pressure.

The head nurse will check your blood pressure.

((sb.'s)) sister to refer to a female sibling She is my younger sister.

Synonyms: female sibling, nun

From Old English 'sweostor', from a Proto-Germanic root common to many Indo-European languages.

Think of the word covering female 'kinship' or care roles: family and religion. The nursing sense is chiefly British.

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