Conventional pair embracing guy (6)
I believe the answer is:
proper
'conventional' is the definition.
(I've seen this before)
'pair embracing guy' is the wordplay.
'pair' becomes 'pr' (abbreviation).
'embracing' is an insertion indicator.
'guy' becomes 'rope' (guy is a type of rope or cable).
'pr' going around 'rope' is 'PROPER'.
(Other definitions for proper that I've seen before include "Conforming to etiquette" , "Correct; formal" , "Suitable and correct" , "Appropriate according to rules" , "Real; genuine" .)