To pull out all the stops means making the greatest possible effort and using every available resource.
The idiom comes from how pipe organs work. Stops control which sets of pipes are used. When all the stops are pulled out, the instrument produces its fullest and loudest sound.
The idiom comes from how pipe organs work. Stops control which sets of pipes are used. When all the stops are pulled out, the instrument produces its fullest and loudest sound.
The team pulled out all the stops to finish the project before the deadline.