Below is the definition for the word you requested, useful for Scrabble and other word games. To find more definitions please use the dictionary page.
be intermediate between two taxonomic groups; "These species 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"
have at least three points in common with; "one curve osculates the other"; "these two surfaces osculate"