KERI

Keri is a Hebrew term which literally means "accident" or "mishap", and is used as a euphemism for seminal emission. The term is generally used in Jewish law to refer specifically to the regulations and rituals concerning the emission of semen, whether by nocturnal emission, or by sexual activity. A man is said to be a ba'al keri after he has ejaculated without yet completing the associated purif... (Wikipedia)