Light touch (3)
'light touch' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for tap that I've seen before include "Light stroke" , "Water source; take advantage of" , "Bugging device" , "milk" , "Knock lightly; a valve" .)
'light touch' is the definition.
(kiss can mean to brush against lightly)
This is the entire clue.
(Other definitions for kiss that I've seen before include "Affectionate greeting" , "Neck - peck" , "x (that may be French)" , "Peck, smacker, X" , "Peck (on cheek or lips?)" .)