The act of selling property under compulsion as to time and place. Often, a sale made by virtue of a court order, ordinarily at public auction, for estate tax purposes.

A sale which is not the voluntary act of the owner, such as to satisfy a debt, whether or a mortgage, judgment, etc. The selling price under such a sale would not be considered market value.

a sale of property by the sheriff under authority of a court's writ of execution in order satisfy and unpaid obligation

The marketing of a property as a result of some outside influence, such as bankruptcy, where the price obtained might not be optimum.