sleepiness

名词 sleepiness:

1. a very sleepy state
   同义词：drowsiness, somnolence

1. Dull with sleepiness; sluggish.
   因困倦而迟钝; 懒怠的
2. Produced or characterized by sleepiness.
   由困倦引起的，或以困倦为特征的
3. Too much food induces sleepiness.
   吃得太饱会引起睡意。