noun
A child-like or dialectal word for snail, similar to でんでんむし. Often used in children's songs or regional speech.
See also: でんでんむし
でで虫が葉っぱの上をゆっくり這っている。
A snail is slowly crawling on the leaf.
雨の日にはでで虫をよく見かける。
On rainy days, I often see snails.
More common and standard word for snail, especially in children's language. でで虫 is a variant with a similar nuance.
The standard, neutral word for snail. でで虫 is more informal and childlike.
Likely a reduplicated form related to でんでんむし, an onomatopoeic or sound-symbolic word for snail. The exact derivation is uncertain.