Definitions for osculate

(be intermediate between two taxonomic groups; "These species osculate")

(have at least three points in common with; "one curve osculates the other"; "these two surfaces osculate")

(touch with the lips or press the lips (against someone's mouth or other body part) as an expression of love, greeting, etc.; "The newly married couple kissed"; "She kissed her grandfather on the forehead when she entered the room")