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inner canthus; inner corner of the eye
映画を見て目頭が熱くなった。
My eyes welled up while watching the movie.
国家斉唱中、彼は目頭を押さえた。
During the national anthem, he pressed the inner corners of his eyes.
娘のスピーチを聞き、父親は目頭に涙を浮かべた。
The father's eyes welled up with tears upon hearing his daughter's speech.