Noble European round house sees canal entrance (7)
I believe the answer is:
earhole
'canal entrance' is the definition.
I don't know anything about this answer so I can't judge whether this works.
'noble european round house' is the wordplay.
'noble' becomes 'earl' (earl is a kind of noble).
'european' becomes 'E' (abbreviation e.g. EU).
'round' is an insertion indicator.
'house' becomes 'ho' (abbreviation for house).
'earl'+'e'='earle'
'earle' going around 'ho' is 'EARHOLE'.
'sees' is the link.
Can you help me to learn more?
(Another definition for earhole that I've seen is " An opening for a listener".)