Meaning of osculate

(verb) 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"