IPA: /ˈhuːpˌskɜːrt/
KK: /ˈhupˌskɜrt/
A type of skirt that is made stiff with a circular frame, often worn to give the skirt a fuller shape.
She wore a beautiful hoopskirt to the ball, which made her dress look very elegant.
Hoopskirt is formed from "hoop" (from Middle English *hoope*, meaning a circular band or ring) and "skirt" (from Old Norse *skyrta*, meaning a garment or shirt). The word describes a skirt that is supported by a circular band, creating a bell-like shape.
Imagine a circular band ('hoop') that supports a garment ('skirt') — that's why a hoopskirt is a skirt shaped by a hoop.
No commonly confused words.