sell up

Short definition from Wiktionary

Verb

1. 1
   To sell one's business or other major asset (such as a home).
2. 2
   To sell all (of the assets of a company or person), in order to reduce its debts or gain liquid money.
3. 3
   To upsell.

Noun

1. 1
   The act or process of selling one's property or business, typically because of debts or financial considerations.