Is in the record as an imperfect utterance (4)
I believe the answer is:
lisp
'an imperfect utterance' is the definition.
The definition and answer can be both related to communication as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'is in the record' is the wordplay.
'in' means one lot of letters goes inside another.
'the record' becomes 'L-P' (abbreviation for long play record).
'is' put within 'lp' is 'LISP'.
'as' is the link.
Can you help me to learn more?
(Other definitions for lisp that I've seen before include "speak imperfectly" , "Talk like thith" , "Non-standard pronunciation" , "Be unable to pronounce S" , "Speak with defective sibilants" .)