An example of a smooch is a peck on the lips from a lover.
An example of smooch is to passionately kiss someone.
They smooched in the doorway.
Origin of smooch
- Alteration of English dialectal smouch perhaps imitative of the sound of a kiss
From American Heritage Dictionary of the English Language, 5th Edition
- Perhaps from a dialectal variation of smack. Compare also Low German smok (“a kiss, a smouch").