One crying out for correction? (6)
I believe the answer is:
howler
'one crying out for correction?' 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?
This is the entire clue.
Can you help me to learn more?
(Other definitions for howler that I've seen before include "Extremely funny joke or glaring blunder" , "Gaffe" , "5 in 9 29 [REVEREND IN CHARLES DICKENS]" , "A foolish mistake, sounds noisy" , "A glaring mistake, perhaps by schoolboy" .)