Sent away for traps (4)
I believe the answer is:
nets
'for traps' is the definition.
(net is a kind of trap)
'sent away' is the wordplay.
'away' is an anagram indicator (letters move away from their original places).
'sent' with letters rearranged gives 'NETS'.
(Other definitions for nets that I've seen before include "puts ball into goal" , "Cricket practice venue" , "bags" , "Lacy curtains" , "practice area" .)