To see Medusa in your dream, signifies cunningness.
Medusa is known as a mythical monstrous woman with hair made of snakes, and whose gaze turns humans to stone. A Medusa's head can represent feeling overwhelmed, and that your problems may even seem to be multiplying.Medusa might also represent the following things, relating to your current or recent life experience:
Fear
Temptation, especially due to curiosity or attraction to femininity and beauty
Chaos, or multiple or amplified threats (as in the wriggling snakes that make up her hair)
Fear or dislike of women or a particular woman, seeing them or her as monstrous somehow
A person or experience that scares you enough you feel "paralyzed" or don't know how to handle it