Grasp flower by the centre for example (6)
I believe the answer is:
master
'grasp' is the definition.
(I've seen this in another clue)
'flower by the centre for example' is the wordplay.
'flower' becomes 'aster' (type of flower).
'by' is a charade indicator (letters next to each other).
'the centre for' says to take the centre.
The central letter of 'example' is 'm'.
'aster' put after 'm' is 'MASTER'.
(Other definitions for master that I've seen before include "Main; overcome; original recording" , "Expert" , "Maestro; teacher" , "One in complete control; great artist" , "Strong chess player" .)