buy out

Short definition from Wiktionary

Verb

1. 1
   to purchase the entire stock or extent of something
2. 2
   to purchase the ownership of a company
3. 3
   To close someone's contract by paying him or her a sum of money, the terms of which are often stated in the contract itself.
4. 4
   To gain release for (a person) from military service by payment of money.
5. 5
   To avoid a punishment or escape a difficult situation.

Noun

1. 1
   Alternative spelling of buyout.