Angry division's sample (5,7)
I believe the answer is:
cross section
'sample' is the definition.
(I know that cross-section is a type of sample)
'angry division's' is the wordplay.
'angry' becomes 'cross' (cross can mean annoyed or angry).
'division' becomes 'section' (synonyms).
'cross'+'section'='CROSS-SECTION'
(Other definitions for cross section that I've seen before include "random sample" , "Representative group" , "Fair sample" , "St Helena's "invention"?" , "formed when cut is implemented" .)