cold sore

Từ điển Oxford Advanced Learner 8th

ˈcold sore [cold sore cold sores] BrE NAmE (NAmE also ˈfever blister) noun
a small painful spot on the lips or inside the mouth that is caused by a virus
See also: ↑fever blister

• Từ đồng nghĩa / Synonyms:
  oral herpes, herpes labialis, fever blister