和英辞書

芋虫

noun

a hairless caterpillar / (figuratively) an angry person (from the way that a person may puff up when angry and go red and swollen in the face, similar to the defense behaviors of some caterpillars)

芋虫が葉っぱを食べているのを見つけました。

I found a hairless caterpillar eating a leaf.

意味（1）

a hairless caterpillar

巨(きょ)大(だい)ないもむし。強(きょう)力(りょく)な酸(さん)をはき、何(なん)でも溶(と)かしてしまう。

Kyodai na imomushi. Kyōryoku na san o haki, nan demo tokashite shimau.A gigantic caterpillar. Its acid is so strong it can melt anything.

意味（2）

(figuratively) an angry person (from the way that a person may puff up when angry and go red and swollen in the face, similar to the defense behaviors of some caterpillars)

意味（3）

(figuratively, derogatory) a dummy; a term used to ridicule a person

意味（4）

a children's song and game, played by everyone squatting and holding onto the waist or shoulders of the person in front, and the whole group trying to move like a caterpillar

意味（5）

a kind of traditional toy made to look and move like a caterpillar