noun
chubby girl; plump girl
Slang term for a girl or young woman who is chubby or plump; often used affectionately or in casual, playful contexts.
あのぽちゃ子はいつも元気でかわいい。
That chubby girl is always cheerful and cute.
ぽちゃ子ファッションが最近人気だ。
Fashion for plump girls has become popular recently.
Similar slang term for a soft, squishy girl; ぷに子 emphasizes softness more than plumpness.
Derived from the mimetic word ぽちゃぽちゃ (plump, chubby) and the suffix 子 (girl). The exact origin is uncertain, but it likely emerged as internet or youth slang.