Iowa is typically less narrow in the centre (5)
I believe the answer is:
waist
'the centre' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe there's a link between them I don't understand?
'iowa is typically less narrow' is the wordplay.
'WAIST' is hidden in amongst the letters.
But, I am uncertain how this is indicated.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for waist that I've seen before include "Central part of body" , "Part of the trunk" , "Middle of trunk" , "Narrow part of body" , "Ship's middle" .)