Confusing latitude with height (8)
I believe the answer is:
altitude
'height' is the definition.
(synonyms)
'confusing latitude' is the wordplay.
'confusing' indicates an anagram.
'latitude' with letters rearranged gives 'ALTITUDE'.
'with' is the link.
(Other definitions for altitude that I've seen before include "Height (above ground)" , "Height above the earth's surface" , "Angular distance above the horizon" , "Height, elevation" , "Elevation above sea level" .)