JMdict entry #1245920

1. noun (common) (futsuumeishi)noun or participle which takes the aux. verb suruintransitive verb racing (of an engine); idling
   see: 空回り・1
2. noun (common) (futsuumeishi)noun or participle which takes the aux. verb suruintransitive verb going in circles (of an argument, discussion, etc.); spinning one's wheels; going nowhere