λύχνα

From LSJ

νύμφην τ' ἄνυμφον παρθένον τ' ἀπάρθενον → wife unwed and virgin that is no virgin | bride that is no bride, virgin that is virgin no more | virgin wife and widowed maid | unwed bride and ravished virgin

Source

French (Bailly abrégé)

ων (τά) :
pl. irrég. deλύχνος.

Russian (Dvoretsky)

λύχνα: τά (наряду с λύχνοι) pl. к λύχνος.