Do ask police about Eastern toy (12)
I believe the answer is:
kaleidoscope
'toy' is the definition.
(kaleidoscope is a kind of toy)
'do ask police about eastern' is the wordplay.
'about' indicates anagramming the letters.
'eastern' becomes 'e'.
'do'+'ask'+'police'='doaskpolice'
'doaskpolice' is an anagram of 'kaleidoscop'.
'kaleidoscop'+'e'='KALEIDOSCOPE'
(Other definitions for kaleidoscope that I've seen before include "poodle is plastered with cake" , "Device showing coloured patterns" , "A changing pattern of colours, shapes" , "colourful viewer" , "ever-changing patterns" .)