Travel to the end of the line for food (5)
I believe the answer is:
tripe
'line for food' is the definition.
The answer and definition can be both related to communication as well as being singular nouns.
Maybe there's a link between them I don't understand?
'travel to the end of' is the wordplay.
'travel' becomes 'trip' (synonyms).
'end of' suggests the final letters.
The last letter of 'the' is 'e'.
'trip'+'e'='TRIPE'
'the' is the link.
Can you help me to learn more?
(Other definitions for tripe that I've seen before include "Rubbish; stomach as food" , "Swallowed" , "Cow's stomach lining used as food" , "Bunk" , "Pants" .)