noun
erotic picture; pornographic image
Refers to sexually explicit or suggestive images, often used in online contexts. The term is casual and direct.
彼のスマホにはエロ画像がたくさん保存されていた。
His smartphone had a lot of erotic pictures saved on it.
エロ画像をネットで検索するのは危険だ。
Searching for pornographic images online is risky.