Fool to take second turn (5)
I believe the answer is:
twist
'turn' is the definition.
(I know that turn can be written as twist)
'fool to take second' is the wordplay.
'fool' becomes 'twit' (both can mean a stupid person).
'to take' indicates putting letters inside (inserted letters are taken in).
'second' becomes 's' (common abbreviation).
'twit' enclosing 's' is 'TWIST'.
(Other definitions for twist that I've seen before include "Wind round - distort" , "Twine, coil" , "Energetic dance for twits" , "Writhe" , "Change - 1960s' dance" .)