1.
a visible blue vein, especially on the forehead when angry
refers to veins becoming visible, particularly used to describe a sign of anger or irritation
Expression of anger
青筋を立てる is an idiomatic expression meaning to be visibly angry, with the image of veins becoming prominent on the forehead or temple due to intense emotion.
Usage
Almost always used in the expression 青筋を立てる (to make veins stand out = to be furious).
Common patterns
- 青筋を立てて怒る - to be furiously angry
- 額に青筋を立てる - to have forehead veins bulging
- こめかみに青筋を浮かべる - to have temple veins showing