2 to decide that you support a particular person or side in an argument, etc.: --
The government has come down on the side of military action.
3 If a person comes down from a drug, they stop feeling its effects. --
4 If you come down (from a college or university, especially Oxford or Cambridge University), you leave your studies either permanently or for a short time. --
Unemployment levels have come down dramatically.
Her temperature is starting to come down at last.
All the leaves have come down now.