(archaic) feminine singular of sien (“his, her”)

Siena (a province of Tuscany, Italy) / Siena (the capital city of the province of Siena, Tuscany, Italy)

feminine singular of le sien: his, hers, its

(archaic) feminine plural of sien

feminine plural of le sien

(informal) to disobey, to get up to mischief, to mess about, to act up, to be up to one's usual tricks, to be up to no good