Learner's definition of PUNISHMENT
1 : the act of punishing someone or a way of punishing someone
I took away my daughter's car keys as a punishment for her bad behavior.
The punishments that the government has inflicted/imposed on the protesters are severe and unjust.
The punishment for murder is life imprisonment.
2 [noncount] : the state of being punished 3 [noncount] : rough physical treatment
These hiking boots are tough enough to take any amount of punishment. [=the boots will not be ruined even if they are used very roughly]
He keeps playing football despite all his injuries. I guess he's a glutton/sucker for punishment. [=he is attracted to pain, suffering, difficulty, etc.]