Definitions

1. verb

to simulate or imitate something, especially a game or a situation

“The kids started to sim a battle scene with their toy guns.”

2. noun

a simulator or a device that imitates a game or a situation

“The gamer spent hours in the sim to get ready for the real competition.”

3. verb

to run a simulation or a test, especially in a computer game

“The team decided to sim the new game to see how it performs.”