What is meant by the saying whirling dervish?

Dervishes are the Muslim equivalent of Buddhist or Christian monks. They take a vow of poverty and beg or work in order to give to the poor. One meditation practiced by dervishes involves spinning or 'whirling'. Despite being a religious practice, it has also come to be seen as a performance and tourist attraction in places like Turkey. Colloquially, the term can describe someone rushing about taking little care of their surroundings.