Noun
aphid; plant louse
Usually written using kana alone
cockroach
Kansai dialectsee ゴキブリ
Japanese house bat (Pipistrellus abramus)
Rare termsee 油蝙蝠
hanger-on; parasite
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