Shoot up frames international mafia (5)
I believe the answer is:
triad
'mafia' is the definition.
The definition and answer can be both groups as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'shoot up frames international' is the wordplay.
'shoot' becomes 'dart' (synonyms).
'up' shows that the letters should be reversed in order (in down clue: letters go upwards).
'frames' indicates putting letters inside.
'international' becomes 'i' (abbreviation eg in IMF).
'dart' backwards is 'trad'.
'trad' going around 'i' is 'TRIAD'.
Can you help me to learn more?
(Other definitions for triad that I've seen before include "Chinese criminal society" , "Chinese secret society" , "Group or set of three" , "Up to date" , "three making a sound?" .)