Your gesture conceals desires (5)
I believe the answer is:
urges
'desires' is the definition.
'your gesture conceals' is the wordplay.
'conceals' says the answer is hidden in the clue.
'URGES' is hidden within 'your gesture'.
(Other definitions for urges that I've seen before include "Advocates strongly" , "Persuades to do something" , "Strong impulses" , "Presses to do something" , "Inner promptings" .)