This is the 6896th most frequent Japanese word.
ペロ
"ペロ" (pero) is a mimetic word that typically refers to licking or the action of a tongue.
In this sentence, 'ペロっと' indicates the quick licking motion typically associated with animals like dogs or cats. It adds a cute and vivid description.
子犬が私の手をペロっと舐めた。
The puppy licked my hand rapidly.
Here, 'ペロペロ' describes the action of licking repeatedly, often used when someone eats something like ice cream or candy by licking.
アイスクリームをペロペロ食べた。
I ate the ice cream by licking it.
In this context, 'ペロっと' conveys the quick and cheeky act of sticking out one's tongue, adding a playful nuance to the action.