It's a new way to relax (3)
I believe the answer is:
sit
'relax' is the definition.
(sitting is a type of relaxing)
'it's a new way' is the wordplay.
'a new way' indicates anagramming the letters.
'its' with letters rearranged gives 'SIT'.
'to' is the link.
(Other definitions for sit that I've seen before include "Pose (for artist)" , "(Of bird) stay on nest" , "I sell badly the cotton yarn" , "Take weight off feet" , "Serve (on jury)" .)