wèn​hào

question mark

问号 (問號) wèn​hào
question mark noun
the punctuation mark (?) used at the end of a sentence to indicate a direct question
unknown noun
an unsolved problem, unknown factor, or a matter of doubt

Frequency

Movie subtitles
0.860 per million appears in 0% of films
Written text
2.53 per million

Sources

Definitions
CC-CEDICT