To me, arms get broken by monkey (8)
I believe the answer is:
marmoset
'monkey' is the definition.
(I know that marmoset is a type of New World monkey)
'to me arms get broken' is the wordplay.
'get broken' is an anagram indicator.
'to'+'me'+'arms'='tomearms'
'tomearms' with letters rearranged gives 'MARMOSET'.
'by' is the link.
(Other definitions for marmoset that I've seen before include "Small monkey - Rome's mat (anag)" , "Star memo about kind of monkey" , "Small bushy-tailed monkey" , "Take me to arms about bushy-tailed monkey of tropical America" , "rather small creature" .)