City tricked by a wooden horse (4)
I believe the answer is:
troy
'city tricked by a wooden horse' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for troy that I've seen before include "Ancient city in Asia Minor" , "System of weights introduced by French" , "Besieged city which fell to Wooden Horse" , "Ancient city; type of weight" , "City of Paris" .)