To address someone; to accost or speak to a person — to start talking to someone by directing speech toward them.
バス停で見知らぬ人に話しかけられて驚いた。
I was surprised when a stranger spoke to me at the bus stop.
道に迷っている外国人に英語で話しかけた。
I spoke to a foreigner who was lost in English.
先生に話しかけて質問をした。
I spoke to the teacher and asked a question.
To begin a conversation; to start talking — the act of initiating a dialogue or starting to converse with someone.
好きな人に話しかけるのは緊張する。
It's nerve-wracking to start a conversation with someone you like.
彼女がまず話しかけてくれたおかげで会話が始まった。
Because she started the conversation, it got going.
イベントで積極的に話しかけて人脈を広げた。
At the event, I proactively started conversations and expanded my network.