青あお筋すじ

noun

vein (visible under the skin); bulging vein

Refers to veins that are visible through the skin, often bluish. Commonly used for bulging veins on the forehead or temples when angry or straining.

• 怒おこると、彼かれのこめかみに青あお筋すじが浮うき出でる。

  When he gets angry, veins bulge on his temples.

• 手ての甲こうの青あお筋すじが透すけて見みえる。

  The veins on the back of my hand are visible through the skin.