っちょperson who is ..., thing that is ...

友達(ともだち)を太(ふと)っちょと言(い)ってからかう。

Tease a friend by calling them chubby, a person who is overweight. {person who is ..., thing that is ...}

ちびっちょはあの棚(たな)の上(うえ)の本(ほん)には触(さわ)れないだろう。

The little one probably can't reach the book on that shelf.

細(ほそ)っちょがあの体格(たいかく)の良(よ)い奴(やつ)に相撲(すもう)で勝(か)てる訳(わけ)が無(な)い。

There's no way that skinny guy could beat that well-built guy in sumo wrestling. {person who is ..., thing that is ...}

説教(せっきょう)中(ちゅう)に横(よこ)っちょを向(む)くなんてさ…まったく…腹(はら)が立(た)つったらないよ。

Looking off to the side in the middle of a lecture... really... It's so infuriating, I can't even describe it. (Dismissive nuance here)

尼(あま)っちょは女(おんな)の子(こ)を指(さ)しますが、その言葉(ことば)には罵(ののし)るようなニュアンスがあります。

"Amiccho" refers to a girl, but the term carries a derogatory nuance. {person who is ..., thing that is ...}