An abominable snowman, like any monster in a dream, can represent something negative in your life.
Because the abominable snowman is associated with a cold environment, a dream that you are being chased or attacked by an abominable snowman can mean that your numbness and inability to face your emotions is causing problems for you.
If you dream that you are an abominable snowman, your lack of feeling or your inability to express your emotions could be hurting others.