संस्‍कृतशब्‍दकोशः

ऋतुस्नाता

आर्तव के बाद स्नात स्त्री

a woman woh has bathed after menstruation and who is therefore fit for intercourse

Monier–Williams

ऋतुस्नाता — { ṛtú-snātā } f. a woman who has bathed after her courses ( and so prepared herself for sexual intercourse ) &c.