Troy (5)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
ilium
'troy' is the definition.
(I know that troy can be written as Ilium)
This is the entire clue.
(Other definitions for ilium that I've seen before include "hip (at least in part)" , "classical city" , "Whence Aeneas fled" , "Part of skeleton" , "Hipbone" .)