Odd mechanical contrivance (9)
I believe the answer is:
eccentric
This might be a double definition.
'odd' is the first definition.
(both can mean unusual)
'mechanical contrivance' is the second definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.
Can you help me to learn more?
(Other definitions for eccentric that I've seen before include "off the wall" , "Somewhat peculiar" , "Odd person is off-centre" , "not moving in proper circles?" , "Odd - nuts" .)