Source: The Great Interpretation of Dreams (Ibn Sirin)
(By analogy with helmet and cracking) A cracked helmet indicates weakness in authority, loss of prestige, or danger threatening security.
Source: Perfuming Humanity in the Expression of Dreams (Al-Nabulsi)
(By analogy) It indicates weakness in protecting family or husband.
Source: Signs in the Science of Expressions (Ibn Shaheen)
(By analogy) It is interpreted as worry and fear.