American sort of ox found around the North (4)
I believe the answer is:
yank
'american' is the definition.
(Yank is an example)
'sort of ox found around the north' is the wordplay.
'sort of ox' becomes 'yak'.
'found around' is an insertion indicator.
'the north' becomes 'n' ('N' can be a synonym of 'north').
'yak' going around 'n' is 'YANK'.
(Other definitions for yank that I've seen before include "American native" , "pluck" , "one across pond" , "Countryman" , "Pull sharply" .)