What Does "Qur" Mean?
Question :
Allâh Almighty says about divorced women, that they:
"..shall wait for three Quru' (menstrual periods)."
What does "Quru"" mean?
Answer:
In the Arabic language, "Qur," the singular for "Quru," sometimes means the time when a woman is pure, and sometimes means the period when she menstruates. In this verse, however, it means the menstrual period; this is correct based on two reasons:
1) When this word is used in the Shari'ah, for the most part, it means the menstrual period.
2) The majority of the Companions hold that it means the menstrual period.
Source:
Ibn Jibreen
Fatawa Islamiyah, Vol. 7 Page 125