Leap about the ring (4)
I believe the answer is:
peal
'the ring' is the definition.
(I've seen this before)
'leap about' is the wordplay.
'about' is an anagram indicator.
'leap' with letters rearranged gives 'PEAL'.
(Other definitions for peal that I've seen before include "Carillon" , "Prolonged sound of a bell" , "Set of bells for ringing" , "Sound of bells, thunder" , "Deep prolonged sound" .)