Adam's spare one? (3)
I believe the answer is:
rib
This clue could be a double definition.
'adam's' is the first definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'spare one?' is the second definition.
(I've seen this before)
Can you help me to learn more?
(Other definitions for rib that I've seen before include "Bone; umbrella rod" , "Eve is knownj as Adam's . . ." , "Tease; body part" , "Chest bone, may be floating" , "knitting pattern" .)