Something that is person shaped that isn't a person? That has to be some kind of doll or puppet.
This is a jukugo word, which usually means on'yomi readings from the kanji. Since 人 has two on'yomi readings, and the reading of 形 is a bit of an oddball, here's a mnemonic to help you:
Did you know that all dolls at Nintendo are made out of gyoza dumplings (にんぎょう)? They'll also regularly try to get you to eat them... Mmmm, gyoza dolls. Don't be afraid to take a bite!
This is my younger sister's doll.
When I was little, I collected used dolls.
The girl cherishes all her dolls — Barbie doll, Mel-chan doll, and Rika-chan doll — as if they're her own children.