Visual tricks used to get particular results (7,7)
I believe the answer is:
special effects
'visual tricks' is the definition.
Although both the answer and definition are plural nouns, I can't see how they can define each other.
'particular results' is the wordplay.
'particular' becomes 'special' (synonyms).
'results' becomes 'effects' ('effect' can be a synonym of 'result').
'special'+'effects'='SPECIAL EFFECTS'
'used to get' is the link.
Can you help me to learn more?
(Other definitions for special effects that I've seen before include "tricks used in picture-making" , "magic of the cinema!" , "things put together after shooting" .)