Poles full of anger giving warning (5)
I believe the answer is:
siren
'warning' is the definition.
(thesaurus)
'poles full of anger' is the wordplay.
'poles' becomes 'sn' (North and South poles).
'full of' indicates putting letters inside.
'anger' becomes 'ire' ('ire' can be a synonym of 'anger').
'sn' placed around 'ire' is 'SIREN'.
'giving' is the link.
(Other definitions for siren that I've seen before include "Hooter - dangerous woman?" , "Dangerously fascinating woman" , "'Delilah!'" , "Device making a loud wailing sound" , "Loud whistle or sea witch" .)