WH-word

American  

[duhb-uhl-yoo-eych-wurd] / ˈdʌb əl yuˈeɪtʃˌwɜrd /

Or wh-word

noun

Grammar.

1. an interrogative or relative word that usually, but not always, begins with wh-, as what, why, where, which, who, or how.

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Example Sentences

The same rule creates relative clauses that begin with a preposition and a wh-word such as the better with which to see you or It’s you of whom she’s thinking.

From Literature