Meaning & use
sister
A girl or woman who has the same parents, or one parent, as another person.
See it in a sentence
My older sister taught me how to ride a bicycle when I was six.
She calls her best friend her sister because they have known each other since childhood.
A note on using this word
Informally extended to close female friends, and used before another noun, as in 'sister company,' to mean closely related or similar.
Words with a similar meaning
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Words with an opposite meaning
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