A great pass, turning, catch (8)
I believe the answer is:
colossal
'a great' is the definition.
(I know that great can be written as colossal)
'pass turning catch' is the wordplay.
'pass' becomes 'col' (col is a term for a mountain pass).
'turning' says the letters should be written in reverse.
'catch' becomes 'lasso' (catch with a rope).
'lasso' written backwards gives 'ossal'.
'col'+'ossal'='COLOSSAL'
(Other definitions for colossal that I've seen before include "Huge, immense" , "Huge, vast" , "Stupendous" , "Great" , "So locals may be huge" .)