Definição e Significado de "[kiss] {sth} goodbye"

What is the origin of the idiom "kiss something goodbye" and when to use it?

The origin of the idiom "kiss something goodbye" comes from the early 1900s. The literal action of waving and blowing a kiss to something as a farewell gesture has been a sign of permanent goodbye for centuries. This gestures derives from earlier traditions where kissing one's fingers and waving them was seen as transferring a kiss through the air to the departing person or thing. This expression emerged in the early 20th century and is now used to refer to the action of accepting something is gone for good in the same way one would blow a farewell kiss.