godan verb (-ku), transitive verb
Used when asking a question or seeking information. The kanji 訊く specifically indicates asking, unlike 聞く which can also mean 'to hear'.
See also: 聞く (きく)
道を訊いてもいいですか。
May I ask you for directions?
彼に名前を訊いたら、笑って答えなかった。
When I asked him his name, he just smiled and didn't answer.