noun
obscene book; pornographic book
A book with sexually explicit content; often carries a negative or disapproving tone. The term is somewhat dated and may be replaced by ポルノ本 or アダルト本 in casual contexts.
彼はこっそり猥本を読んでいた。
He was secretly reading an obscene book.
その古本屋では猥本が売られていた。
Obscene books were sold at that secondhand bookstore.