Ditch and a river with two channels (8)
I believe the answer is:
binaural
'ditch and a river with two channels' is the definition.
I can't judge whether this definition defines the answer.
'ditch and a river' is the wordplay.
'ditch' becomes 'bin' (both can mean to reject or throw away).
'and' says to put letters next to each other.
'river' becomes 'ural' (I've seen this in other clues).
'bin'+'a'+'ural'='BINAURAL'
Can you help me to learn more?
(Other definitions for binaural that I've seen before include "using two sound channels" , "Using two ears" , "Involving both ears" .)