Embarrassment in a dream usually centers on social fear -- a moment where you're seen doing or being something you'd rather have kept private, in front of people whose judgment matters to you. It often surfaces around real self-consciousness, a worry about how you're perceived that's bigger than the specific scenario in the dream itself.
The first sign hath pre-eminence in signification, when there be two signs have to do with the thing. - William Lilly (1602.-1681.)