when someone stays somewhere in secret, especially because they have done something illegal or are in danger
be in/go into/come out of hiding
He went into hiding in 1973.
2 [singular] spoken informal
a severe physical punishment [= beating]:
You'll get a good hiding when you come home!
You're not too big for a hiding, you know.
an occasion when you defeat someone in a sports game
3 British English informal
to be completely wasting your time trying to do something