to sell all of something. We ended up with a large stock of out-of-style coats and we had to sell them all off at a loss. We sold off all the excess stock.
Get rid of by selling, often at reduced prices. For example, The jeweler was eager to sell off the last of the diamond rings. [c. 1700] Also see sell out, def. 1.
To get rid of something, especially investment assets, by selling: The company had to sell off some assets so that it could pay its debts. The bank foreclosed on my house and sold it off to the highest bidder.