Racehorses in the racket (6)
I believe the answer is:
string
'racehorses' is the definition.
(I've seen this before)
'in the racket' is the wordplay.
I cannot quite understand how this works, but
'in' is present in the answer.
'the' could be 't' (the is pronounced as a 't' sound in some dialects) and 't' is present in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for string that I've seen before include "Cord, twine" , "Thin piece of cord" , "Violin wire" , "Thin length of cord etc" , "Narrow cord or kind of mesh vest" .)