살풋 means "lightly" or "gently". But we do not use that expression much. Most of Korean would use 살며시 rather than 살풋.

살풋 or 살푸시 is a dialect of 살포시 살포시 means "드러나지 않게 살며시" gently, softly, lightly 살풋 인상을 찌푸렸다 He frowned lightly