Two nerves meet creating pinch point (10)
I believe the answer is:
bottleneck
'pinch point' is the definition.
The definition and answer can be both shapes as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'two nerves meet' is the wordplay.
'two nerves' means two substitutions for 'nerve'.
'nerve' becomes 'bottle' (I've seen this before).
'nerve' becomes 'neck' (I've seen this before).
'meet' means one lot of letters go next to another.
'bottle'+'neck'='BOTTLENECK'
'creating' is the link.
Can you help me to learn more?
(Other definitions for bottleneck that I've seen before include "hold-up situation" , "Where traffic is squeezed" , "Congestion" , "may cause delay" , "Traffic restriction" .)