Eccentric canes pig breaking free (8)
I believe the answer is:
escaping
'breaking free' is the definition.
(I've seen this before)
'eccentric canes pig' is the wordplay.
'eccentric' indicates an anagram.
'canes'+'pig'='canespig'
'canespig' with letters rearranged gives 'ESCAPING'.
(Other definitions for escaping that I've seen before include "Getting away from confinement" , "Breaking loose" , "Fleeing" , "Breaking free" , "Getting free" .)