絞盡腦汁

To twist strands into thread; to wring; to entangle; to hang by the neck; to turn or wind; a type of execution by hanging.

To use up; to exhaust; to finish; to the utmost; entirely; all; to die; to disappear; complete.

brain; mind; head; the central part of something; a thing shaped like brain matter.

The liquid or fluid contained within something; sap; gravy; sauce; juice.