Wind with one in the opposite direction missing area (8)
I believe the answer is:
westerly
'wind' is the definition.
(westerly is a kind of wind)
'with one in the opposite direction missing area' is the wordplay.
I cannot really understand how this works, but
'with' could be 'w' (short for with) and 'w' is located in the answer.
'the' could be 't' (the is pronounced as a 't' sound in some dialects) and 't' is found within the answer.
'direction' could be 'ese' (ESE is an example) and 'ese' is located in the leftover letters.
The remaining letters 'rly' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for westerly that I've seen before include "Wind from Atlantic" , "Type of wind blowing east" , "Wet lyres (anag.)" , "Our prevailing wind" , "It blows extremely" .)