Aerial gannet naturalist describes going westwards (7)
I believe the answer is:
antenna
'aerial' is the definition.
('antenna' can be a synonym of 'aerial')
'gannet naturalist describes going westwards' is the wordplay.
'ANTENNA' is hidden back-to-front within the letters.
But, I am uncertain how the hidden word is indicated.
Can you help me to learn more?
(Other definitions for antenna that I've seen before include "one feels" , "Feature of dish" , "Transmitting aerial" , "Feeling part" , "receiver" .)