Height and distance from the equator after a tweak (8)
I believe the answer is:
altitude
'height' is the definition.
(synonyms)
'distance from the equator after a tweak' is the wordplay.
I cannot quite understand how this works, but
'distance' could be 'd' (abbreviation) and 'd' is located in the answer.
'from' could be 'e' (I've seen this in other clues) and 'e' is found in the answer.
'the' could be 't' (the is pronounced as a 't' sound in some dialects) and 't' is located in the answer.
'a' is present in the answer.
This explanation may well be incorrect...
'and' acts as a link.
(Other definitions for altitude that I've seen before include "Height (above ground)" , "Elevation above sea level" , "Lofty position" , "Loftiness" , "Angular distance above the horizon" .)