Definitions

1. noun

a meeting, especially one for a game or activity, such as a card game or a video game

“I have an mtg with friends tomorrow to play Magic: The Gathering.”

2. verb

to engage in a meeting or gathering, especially for a game or activity

“We’re mtg at the park to play a pickup game of soccer.”

3. abbreviation

a three-letter abbreviation for the word ‘meeting’

“The schedule lists the mtg at 2 PM.”