Set Off (A)
.A commercial expression. The credits are set off against the debits, and the balance struck.
Set off to advantage. A term used by jewellers, who set off precious stones by appropriate “settings.”
· 
· 
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Entry taken from Dictionary of Phrase and Fable, edited by the Rev. E. Cobham Brewer, LL.D. and revised in 1895.