noun
butt plug; anal plug
A sex toy designed for anal insertion. The term is a direct loan from English and is used in adult contexts.
アナルプラグは初心者向けの小さいサイズから選ぶといい。
It's good to choose a butt plug starting from a small size for beginners.
Variant with interpunct; less common but still seen.
Loanword from English 'anal plug'.