to understand what someone is trying to tell you, even if that person is not expressing themselves directly

I never answer his calls, so you'd think he'd get the message. 我从不接他的电话，所以你想他会明白我的意思吧。

Her boss started giving her more and more menial work to do. Eventually she got the message and left.

I think the government has got the message that most voters are opposed to this measure.

I've left all the cleaning materials out, so I hope they'll get the message!

We offered to buy her some more appropriate clothes but she still didn't get the message.

See also: message noun (IDEA)