To change to a tan colour due to exposure to the sun.

“No matter how long I stay out in the sun, I never tan. though I do burn.”

To change an animal hide into leather by soaking it in tannic acid. To work as a tanner.

To spank or beat.

The process of making leather, which does not easily decompose, from the skins of animals, which do.

The acquisition of a tan, either by exposure to the sun, or artificially.

A spanking.