Employ trick, right away (3)
I believe the answer is:
use
'employ' is the definition.
('use' can be a synonym of 'employ')
'trick right away' is the wordplay.
'trick' becomes 'ruse' (I've seen this before).
'right' becomes 'r' (common abbreviation).
'away' indicates named letters should be taken away.
'ruse' with 'r' removed is 'USE'.
(Other definitions for use that I've seen before include "Consumption" , "Practise" , "Apply, employ" , "Employ; consume" , "Bring into play" .)