centipede
蜈 refers to a centipede, a many-legged creeping insect.
蜈 combines 虫 (insect) with 吳, which likely contributes the sound ゴ. The exact historical development of the right component is uncertain.
The insect radical 虫 on the left signals a creepy-crawly, and the right side 吳 looks like a tangle of legs. Picture a centipede with countless legs wriggling through the grass.
For ゴ, imagine a centipede going "go, go, go!" as it scurries across the floor: go -> ゴ.
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