noun
alligator clip; crocodile clip
A spring-loaded electrical clip with serrated jaws, resembling a bagworm (みのむし). Used for temporary connections in electronics.
See also: ワニ口クリップ
みの虫クリップで電池にLEDをつないだ。
I connected the LED to the battery with an alligator clip.
テスターのリード線にはみの虫クリップが付いている。
The tester's lead wires have alligator clips attached.
Synonym; ワニ口クリップ is also common, literally 'alligator mouth clip'. Both refer to the same tool.
Compound of みの虫 (bagworm) + クリップ (clip), from the resemblance of the clip's jaws to a bagworm's case.