Phrasal verb - Sell Out
Definition:
1) Sell every item of a certain stock so no one can buy more
2) Betray principles
Rules:
Intransitive, Inseparable
Examples:
"I tried to get tickets to Metallica but they were sold out :(" (1)
______________
"I used to really like this band, their music was so real! But now they've sold out and now they make crappy music!" (2)