* Zénith (zenith): This is the highest point in the sky, directly overhead.
* Zéphyr (zephyr): This is a gentle, west wind.
* Zigzag (zigzag): This word is borrowed from English, but it's widely used in French.
* Zoo (zoo): This is also borrowed from English, but it's a common word in French.
While there are not many French words starting with "z," it's interesting to see how some words from other languages have become integrated into the French vocabulary!