Gallant in a hurry (7)
I believe the answer is:
dashing
'gallant' is the definition.
(I know that gallant can be written as dashing)
'hurry' is the wordplay.
I cannot really see how this works, but
'hurry' could be 'dash' (dash is a kind of hurry) and 'dash' is located in the answer.
This explanation may well be incorrect...
'in a' acts as a link.
Can you help me to learn more?
(Other definitions for dashing that I've seen before include "sprinter's talent?" , "Stylish, adventurous" , "as blade might be" , "Frustrating; debonair" , "Swashbuckling" .)