What is Lightly ?
Lightly is (adv) 1. gently, without force She touched my arm lightly. I always sleep lightly and wake up several times each night. 2. not severely she was lucky to get off so lightly she was lucky not to be punished 3. without much rich food She always eats lightly at lunchtime. 4. not very much some lightly cooked vegetables
source: Easier English, Student Dictionary Upper Intermediate Level