問う
とう · tou · JLPT N3 · verb-godan
to ask
🚪👄 問 = gate 門 + mouth 口: a mouth at the gate, asking to come in
The kanji puts a mouth 口 inside a gate 門, so a voice at the gate is asking questions. Its reading とう sounds like toe, as in stubbing your toe and asking what happened. You also see 問 in 質問 (question) and 問題 (problem).