Bootcut names a shape of jeans or trousers: the leg stays fairly slim down the thigh and knee, then opens out a little at the hem, just enough to sit over a boot. It is not the same as a flare, which rings out much wider, like a bell; bootcut is only a gentle widening at the end. Clothes shops set it against skinny (tight all the way down) and straight (the same width from knee to ankle). The name is honest about the job — the cut was made so the cloth would cover a boot rather than bunch above it. You hear it in fashion and shopping talk, not in formal writing. People say bootcut jeans, bootcut trousers, or, more loosely, “a pair of bootcuts”. The style had a big moment in the late 1990s and 2000s, then thinned out when skinny jeans took over, and then came back. Older shoppers still use the word as if everyone knows it; younger ones may need the picture (slightly wider at the ankle) before the label means anything.

靴型褲、靴型牛仔褲（褲管尾端略寬，方便套進靴子；比「喇叭褲」窄，接近「微喇」）