Airman trained in sailing centre (6)
I believe the answer is:
marina
'sailing centre' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe there's a link between them I don't understand?
'airman trained' is the wordplay.
'trained' indicates anagramming the letters (to train can mean to grow something into a shape).
'airman' with letters rearranged gives 'MARINA'.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for marina that I've seen before include "Place for mooring boats" , "Base for pleasure boats" , "Yacht station" , "seaside area" , "where yachts moor" .)