A windmill or wind turbine — a device that rotates using wind power to do work or generate electricity.
海沿いの丘に巨大な風車（風力タービン）が並んでいる。
Giant wind turbines line the hills along the coast.
小さな風車で水を汲み上げる昔の装置が村に残っている。
A small old windmill used to pump water still remains in the village.
風車の羽根が強風で損傷したため、点検が行われた。
The windmill blades were damaged by strong winds, so an inspection was carried out.
A pinwheel (toy) — a small spinning toy that turns in the wind.
公園で子どもがカラフルなかざぐるまを振って遊んでいた。
A child in the park was playing by waving a colorful pinwheel.
祭りの屋台で紙の風車を一つ買った。
I bought a paper pinwheel at a stall at the festival.
Clematis patens — a climbing plant also called 'kazaguruma' in Japanese, named for its windmill-like flowers.
庭にカザグルマを植えたら、初夏に美しい花が咲いた。
I planted clematis in the garden and beautiful flowers bloomed in early summer.