Cord wound round one in classical style (5)
I believe the answer is:
doric
'classical style' is the definition.
(I've seen this in another clue)
'cord wound round one' is the wordplay.
'wound' is an anagram indicator (wound can mean twisted or turned around).
'round' is an insertion indicator.
'one' becomes 'i' (Roman numeral).
'cord' with letters rearranged gives 'dorc'.
'dorc' enclosing 'i' is 'DORIC'.
'in' is the link.
(Other definitions for doric that I've seen before include "Ancient dialect" , "Plainest order of Gk. architecture" , "Denoting a classic Greek style" , "Type of classical architecture" , "Of the oldest and simplest form of architecture" .)