Fix one's bearings in the East (6)
I believe the answer is:
'east' is the definition.
(I know that east can be written as Orient)
'fix one's bearings in the' is the wordplay.
'fix' indicates anagramming the letters.
'bearings' becomes 'ri' (I can't justify this - if you can you should give a lot more credence to this answer).
'in' is an insertion indicator.
'the' becomes 't' (the is pronounced as a 't' sound in some dialects).
'one' anagrammed gives 'oen'.
'oen' enclosing 'ri' is 'orien'.
Can you help me to learn more?
(Other definitions for orient that I've seen before include "Leyton -- FC" , "The east as opposed to the Occident" , "Asia" , "London team" , "Determine position with regard to points of compass" .)