noun
failing mark; failing grade
Commonly used in school contexts for a score below the passing threshold, often associated with red ink. Compare 落第点.
See also: 落第点
数学で赤点を取ってしまった。
I got a failing mark in math.
赤点を取ると補習を受けなければならない。
If you get a failing grade, you have to take remedial classes.