The meaning of abominable snowman is interpreted in the dream as the symbol of unknowingness and fear. To get the better interpretation of your dream, please also see the meaning of the dream Yeti.
Dream dictionary: snowman dream meanings
If you dream of a snowman, then such dream indicates the feelings that became cold. Maybe the dream shows that you have lost the sensitivity and tenderness. On the other hand, the dream may show you the fun side of yours.