blister · noun C /ˈblɪs.tər/
C2 a painful, raised area of skin with liquid inside, that you get if your skin has been rubbed or burned, or a similar area on a painted surface
I've got a blister on my toe.
Some people weren't really walking any more. The blisters and aching muscles gave them too much stress. (Certificate of Proficiency in English; C2; Dutch)