to run without doing anything useful, e.g. a (nautical) screw running in air, of wheels spinning freely without friction, of a chain that is too long, etc.
to run without doing anything useful, e.g. a (nautical) screw running in air, of wheels spinning freely without friction, of a chain that is too long, etc.
to draw a blank be unable to recall something or not get it realize something that one should
to draw a blank be unable to recall something or not get it realize something that one should
to skip a beat