Spiritual Meaning:
An emblem is a symbol, a pictorial representation of something that allows the mind to make a connection. Spiritually, therefore, it is a way of changing our perception.

Psychological / Emotional Perspective:
In a more technological age an emblem will have less connection with heraldry, a former source of emblems, and more to do with commercial concerns. A particular emblem or logo in dreams usually has some kind of personal resonance for us.

Everyday Material Aspects:
An emblem, much like the knight’s standard of old, is a rallying point or a call for loyalty. It is also an easily recognized instruction as in road signs. In dreams, once we have sorted out the symbolism, it often performs  this function.

Also consult the entry for Badge / Brooch.