Title of respect for an adult female member of a religious order.

(transitive, construction) To strengthen (a supporting beam) by fastening a second beam alongside it. / (obsolete, transitive) To be sister to; to resemble closely.

A daughter of the same parents as another person; a female sibling. / A female member of a religious order; especially one devoted to more active service; (informal) a nun.

present participle of sister

(obsolete) contiguous

simple past tense and past participle of sister

Third-person singular simple present indicative form of sister

plural of sister

plural of Sister

The sister of one's spouse. / The wife of one's sibling. / The wife of the sibling of one's spouse. / The sister of the spouse of one's sibling.