(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!’

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

he looks tanned and healthy

a pair of oversized aviator sunglasses hid much of her tanned face

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

tanned hides