Turn to see ladies joining king's circle (4,5)
I believe the answer is:
look round
'turn to see' is the definition.
(as in looking at one's surroundings)
'ladies joining king's circle' is the wordplay.
'ladies' becomes 'loo' ('the ladies' is a type of loo or toilet).
'joining' means one lot of letters go next to another.
'king' becomes 'K' (abbreviation for king in chess).
'circle' becomes 'round' (synonyms).
'loo'+'k'+'round'='LOOK ROUND'
(Other definitions for look round that I've seen before include "inspection" , "The Globe should do this" .)