blister
US /ˈblɪs.tɚ/
UK /ˈblɪs.tɚ/

1.
ampoule
a small bubble on the skin filled with serum and caused by friction, burning, or other damage
:
•
The new shoes gave her a painful blister on her heel.
Les nouvelles chaussures lui ont donné une douloureuse ampoule au talon.
•
He got a large blister on his hand from using the shovel.
Il a eu une grosse ampoule à la main à force d'utiliser la pelle.
2.
cloque, bulle
a raised area or spot on a surface, typically caused by a defect or damage
:
•
There was a small blister in the paintwork of the old car.
Il y avait une petite cloque dans la peinture de la vieille voiture.
•
The heat caused the wallpaper to form blisters.
La chaleur a fait former des cloques au papier peint.
1.
cloquer, former des ampoules
form a blister or blisters on (the skin or another surface)
:
•
The hot sun began to blister his skin.
Le soleil brûlant commença à lui cloquer la peau.
•
The paint on the old shed had started to blister and peel.
La peinture de l'ancien abri avait commencé à cloquer et à s'écailler.