Poetic measures one 'as about doctor (5)
I believe the answer is:
iambs
'poetic measures' is the definition.
The answer and definition can be both related to communication as well as being plural nouns.
Maybe you can see an association between them that I don't see?
'one 'as about doctor' is the wordplay.
'one' becomes 'i' (Roman numeral).
'about' indicates putting letters inside.
'doctor' becomes 'mb' (Bachelor of Medicine, Medicinae Baccalaureus).
'as' enclosing 'mb' is 'ambs'.
'i'+'ambs'='IAMBS'
Can you help me to learn more?
(Other definitions for iambs that I've seen before include "bits of poetry" , "feet" .)