noun
city kid; urbanite; person born and raised in the city
Often carries a nuance of being unfamiliar with rural life or nature; can be used affectionately or with mild teasing.
彼は生粋の都会っ子で、田舎の生活に憧れている。
He's a true city kid and longs for life in the countryside.
都会っ子の私には、虫が多すぎてキャンプはちょっと苦手
As a city kid, camping is a bit tough for me with all the bugs.
Compound of 都会 (city) + っ子 (child/person from a place). The っ is a euphonic insertion common in such compounds.