To notice eyebrows in your dream represent expressions of amazement, disbelief, surprise, or doubt. It may also indicate concern or disapproval.
To dream that you have no eyebrows suggests that you are lacking emotions. You are not expressing yourself enough.
To dream that you or someone is getting their eyebrow pierced, may be a metaphor for your “piercing eyes”. Alternatively, the dream is drawing your attention to something disturbing or significant that you saw. Perhaps you saw something you that shouldn’t have.