noun
toilet insect; bugs found in toilets
Colloquial term for insects commonly seen in bathrooms or toilets, such as drain flies or silverfish. Not a formal biological term.
トイレに便所虫がいたから、掃除した。
There was a toilet insect in the bathroom, so I cleaned it.
便所虫って、正式な名前じゃないんだよね。
You know, 'toilet insect' isn't the official name, right?
General term for 'insect' or 'bug'; 便所虫 specifies insects associated with toilets.
Compound of 便所 (toilet) and 虫 (insect). A straightforward descriptive term for insects found in toilets, likely coined in colloquial speech.