1. Noun

   aphid; plant louse

   Usually written using kana alone

2. cockroach

   Kansai dialectsee ゴキブリ

3. Japanese house bat (Pipistrellus abramus)

   Rare termsee 油蝙蝠

4. hanger-on; parasite

5. visitor to a red-light district who's only there to look

   Archaic

Also written あぶら虫【あぶらむし】aburamushi、蚜虫【あぶらむし】aburamushi