Taradiddle (3)
I believe the answer is:
lie
'taradiddle' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for lie that I've seen before include "habitat for animal or bird" , "Be prone - misrepresent the facts" , "Piece of fiction" , "Fabrication" , "Rest; falsehood" .)