Under pressure idiot left key (8)
I believe the answer is:
passport
'key' is the definition.
The answer and definition can be both related to communication as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'under pressure idiot left' is the wordplay.
'under pressure' becomes 'p' (abbreviation. I am not sure about the 'under' bit.**).
'idiot' becomes 'ass' (I've seen this before).
'left' becomes 'port' (left side of a ship - opposite of starboard).
'p'+'ass'+'port'='PASSPORT'
Can you help me to learn more?
(Other definitions for passport that I've seen before include "is the open sesame" , "one admits" , "Document facilitating travel" , "entry permit?" , "Travel authorisation" .)