What word has only w as a vowel?

This is a bit of a trick question! There's no word in English that has only "w" as a vowel.

Here's why:

* Vowels vs. Consonants: Vowels are sounds made with your mouth open, while consonants are sounds made with your mouth partially closed. "W" is actually a consonant sound, even though it can sometimes sound like a vowel (like in "wow").

* English Pronunciation: The "w" sound usually acts as a consonant in English words, even when it's the first letter, as in "water" or "wonder."

Let me know if you have any other word puzzles!