noun

A blister is a small bubble on your skin. It is filled with a clear liquid and can be sore or itchy. Blisters can happen when your skin rubs against something too much or if you get a burn.

Example

1. I got a nasty blister on my foot from walking too much.
2. She applied a bandage to her blister to protect it from further irritation.
3. The sunburn caused blisters on my shoulders that were extremely painful.