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.
Compound of エロ (from English 'erotic') and 画像 (image). The abbreviation エロ is widely used in Japanese slang.