Courage and audacity needed for such an obstruction (10)
I believe the answer is:
bottleneck
'such an obstruction' is the definition.
'bottleneck' can be an answer for 'obstruction' (bottleneck is a kind of obstruction). I'm unsure of the 'such an' bit.
'courage and audacity' is the wordplay.
'courage' becomes 'bottle' (bottle can mean courage).
'and' means one lot of letters go next to another.
'audacity' becomes 'neck' (neck can mean rudeness or audacity).
'bottle'+'neck'='BOTTLENECK'
'needed for' is the link.
Can you help me to learn more?
(Other definitions for bottleneck that I've seen before include "Congestion" , "Traffic jam" , "Snarl-up" , "may cause delay" , "Where one may get trapped" .)