Some objects that start with this letter are zipper, zither and zeppelin. While a zither is a stringed instrument, a zeppelin is a type of rigid airship used in the early 20th century. Although these are objects that start with the letter "z", there are many more words with this letter.
Some other examples are zebra, zinnias, zodiac, zero, zucchini, zenith and zygote. The letter "z" is the last letter of the English alphabet. An interesting fact on this letter is that in the first century B.C. it became the last letter of the Roman alphabet. This was necessary because the Romans used words taken from the Greek language that had the "zeta" sound. Zeta is a letter in the Greek alphabet.