What is "gheerah"

Ghayrah ( Arabic: غيرة) (sometimes transliterated Gheera, Ghirah, or Ghayra) is an Arabic word which means "protective jealousy" or "justifiable jealousy." From the Islamic perspective, it is seen as a good and necessary type of jealousy that men have for the womenfolk (e.g. their wife, their sisters, and their daughters) and is perceived as a necessary part of Islam. The concept asserts that all Muslim men should have a collective sense of protectiveness for Muslim women.