noun
a physical expression of affection or greeting
verb
to touch or press with the lips as a sign of love, greeting, or farewell
-
Before departing, they exchanged a polite kiss good bye.
-
She gave him a quick kiss good bye before heading out the door.
-
They shared a smooch good bye before going their separate ways.
-
As the sun set, the old year gave a gentle kiss good bye to make way for the new year.