also punch drunk
1.
A ~ boxer shows signs of brain damage, for example by being unsteady and unable to think clearly, after being hit too often on the head.
ADJ: usu ADJ n
2.
If you say that someone is ~, you mean that they are very tired or confused, for example because they have been working too hard.
He was ~ with fatigue and depressed by the rain.
ADJ: usu v-link ADJ