dm

abbreviation

decimetre(s).

1. Deutschmark.

   an annual fee of DM200

1. a private message sent on social media, especially Twitter.

   send them a quick DM and ask for their email address

1. send (someone) a private message on social media, especially Twitter.

   you can't DM a user who doesn't follow you

   the band will DM you a link to download the song

early 21st century: abbreviation of direct message, from the Direct Message feature of the social media application Twitter.

1. (in a role-playing game) a Dungeon Master.

   it was the DM's job to make the stories and quests interesting

1. organize and oversee a role-playing game, especially Dungeons & Dragons, in particular by narrating the details of the story that are not controlled by the players.

   he DMed while I played as a solo warrior

   I'm lined up to DM a Dungeons & Dragons session

noun, symbol

a metric unit of length, equal to one tenth of a metre.

noun

short for Dr Martens.