Islamic Interpretation of Dreams (Ibn-i Sirin):
(Armor; Coat of mail) Abroad piece carried by warriors for their protection during their fight.
In a dream, a shield means a faithful but an arguing friend.
It also represents a well-mannered and a true person, or a sincere person who protects his friends and helps them.
A valuable shield in a dream represents a beautiful and a wealthy wife, or any female acquaintance or relative.
If the shield is worthless in the dream, then it means the opposite.
(Also see Armor)