abbreviation for direct message: a private message sent on a social media website, that only the person it is sent to can see

She received threats and abuse in her DMs. 她在私信中受到威胁辱骂。

abbreviation for direct message: to send someone a private message on a social media website

I'm selling my bike. DM me if you're interested. 我有一辆自行车出售，有兴趣的话可以给我发私信。