Definition of 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 someones 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"