osculate

Verb

• 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
    

• be intermediate between two taxonomic groups
  • These species osculate
    

Related words

• Synonyms: 
  snog , kiss , buss