They're gentlemanly in many ways (3)
I believe the answer is:
men
'ways' is the definition.
The answer and definition can be both man-made objects as well as being plural nouns.
Perhaps you can see an association between them that I can't see?
'they're gentlemanly in many' is the wordplay.
I cannot really see how this works, but
'many' could be 'm' (Roman numeral for a thousand) and 'm' is located in the answer.
The remaining letters 'en' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for men that I've seen before include "Chess pieces" , "Adult males" , "Male humans" , "Fellows, chaps" , "Human males" .)