WH-question

or wh-ques·tion

[ duhb-uh l-yoo-eych-kwes-chuh n ]
/ ˈdʌb əl yuˈeɪtʃˌkwɛs tʃən /

noun Grammar. (in English)

a question containing a WH-word, often in initial position, and calling for an item of information to be supplied, as Where do you live?
Compare yes-no question.