x mark; cross mark
Used to indicate an incorrect answer, a negative choice, or something that is not allowed. Often contrasted with マル (circle) for correct/yes.
See also: ばってん
The teacher marked the wrong answer with an x.
There was an x mark next to my answer on the test.
Please put an x mark on the items that do not apply on this form.
Slang term for the drug MDMA (ecstasy). Used in informal contexts.
I saw someone doing ecstasy at the club.
This question got marked with an x.
Please answer this question with a circle or an x.
counter for small objects; counter for pieces · counter for military units · individual; one person · counter for years of age difference; counter for school years
Katakana spelling is common for the 'x mark' sense; usually written in kana.
Hiragana spelling is also used; usually written in kana.
Fullwidth 'x' symbol; this is a kanji form, but it is rarely used as a word spelling.
From the shape of the letter 'x' or a cross mark. The slang sense for MDMA likely derives from the association of the letter 'x' with the drug ecstasy.