What is "smooching"

Usage examples of "smooching".

Well, so had she, come to that, but her smooching had been in Camberley where she had lived, pre-Peter but post parental divorce, after twenty-five years of marriage.

I would have hated to miss their smooching with Umlaut, because I knew him and smooched him some myself.

A couple of kids were smooching near the south perimeter behind the cafeteria.