Strong H4726 מָקוֹר mâqôr mâqôr · fountain

Leviticus

1. Leviticus 12:7
   Who shall offer it before the Lord, and make an atonement for her; and she shall be cleansed from the issue of her blood. This is the law for her that hath born a male or a female.
2. Leviticus 20:18
   And if a man shall lie with a woman having her sickness, and shall uncover her nakedness; he hath discovered her fountain, and she hath uncovered the fountain of her blood: and both of them shall be cut off from among their people.