Shouts when Henry's out of line! (5)
I believe the answer is:
hails
'shouts' is the definition.
The answer and definition can be both related to communication as well as being plural nouns.
Perhaps you can see a link between them that I can't see?
'henry's out of line' is the wordplay.
'henry' becomes 'hal' (short for Henry).
'out of' means to remove the last letter (I've seen 'out' mean this).
'line' becomes 'ils' (I can't justify this - if you can you should give a lot more credence to this answer).
'hal' with its final letter removed is 'ha'.
'ha'+'ils'='HAILS'
'when' is the link.
Can you help me to learn more?
(Other definitions for hails that I've seen before include "Greets" , "pelts" , "Attracts attention by calling to someone" , "Praises" .)