X far, filthiness, X flowers, menstruous (woman), put apart, X removed (woman), separation, set apart, unclean(-ness, thing, with filthiness)

Concise Bible Dictionary:

Ceremonial uncleanness had a large place in the Jewish ritual (Lev. 5:33Or if he touch the uncleanness of man, whatsoever uncleanness it be that a man shall be defiled withal, and it be hid from him; when he knoweth of it, then he shall be guilty. (Leviticus 5:3)). It demanded separation from the camp for a time, and in many cases an offering must be brought before there could be restoration. It is typical of the moral uncleanness that separates from communion with God and the assembly.

Strong’s Dictionary of Hebrew Words:

Number:
5079 (find all occurrences in KJV Bible)
Transliteration:
niddah
Phonic:
nid-daw’
Meaning:
from 5074; properly, rejection; by implication, impurity, especially personal (menstruation) or moral (idolatry, incest)
KJV Usage:
X far, filthiness, X flowers, menstruous (woman), put apart, X removed (woman), separation, set apart, unclean(-ness, thing, with filthiness)