(of a person or their skin) become brown or darkened after exposure to the sun

you'll tan very quickly in the pure air

convert (animal skin) into leather by soaking in a liquid containing tannic acid, or by the use of other chemicals

beat (someone) repeatedly as a punishment

‘If Mickey touches a fishing net, I'll tan his hide!’

the action or activity of exposing one's skin to the sun in order to achieve a brown or darkened colour

for many people, tanning is a key part of a summer beauty routine

the action or process of converting animal skin into leather by soaking it in a liquid containing tannic acid, or by the use of other chemicals

the archaeologists also discovered a pit used for the tanning of animal hides