To dream that the arms are withered predicts suffering in health and fortune; that they have grown strong indicates success.
The latter part of this interpretation is obviously based upon physical stimuli, and the conditions of the body may be deduced therefrom.... The Fabric of Dream
1- We use our arms in all sorts of different ways, and in dreams it is often significant to note what is actually taking place. We may be defending ourselves, fighting, being held or acknowledging.
2- Arms in the sense of weapons are used to protect and defend. In olden times, there were quite a series of rituals to do with the Page becoming the Knight and making the transit from the arms-bearer to the user.
3- The arm signifies surrender, wisdom, or action.... Ten Thousand Dream Dictionary
Depth Psychology: The image of the arm represents your ability to express your emotions, thoughts, or needs, and to either realize or destroy them. See Right, Left.... Dreamers Dictionary
If they are placed across the chest we are defending ourselves.
If we are held in or by someone else’s arms it suggests a need for security.
A coat of arms or other such insignia suggests a form of recognition. Also consult the entries for body, sword and weapons.... Dream Meanings of Versatile
Depth Psychology: The coat of arms is a symbol of your character and personality. It is a sign of what you have already achieved or want to try to achieve (if the coat of arms is beautifid). Seeing a coat of arms designated in the dream as belonging to your own family: if the coat of arms has the figure of an animal, look under the respective entry (for instance, see Eagle). See Name.... Dreamers Dictionary