also: もとかの
noun
ex-girlfriend; former girlfriend
Colloquial term for a past romantic partner (female). Often used in casual conversation.
See also: 彼女
元カノと偶然会った。
I ran into my ex-girlfriend by chance.
彼はまだ元カノのことを忘れられないみたいだ。
It seems he still can't get over his ex-girlfriend.
Compound of 元 (former) and カノ, a shortening of 彼女 (girlfriend).