The term 'Came DOWN IN BUCKETS' is a phrase used to describe a heavy rain. The crossword solutions for this phrase are RAINED (6 letters), POURED (6 letters), and TEEMED (6 letters). RAINED means to fall from the sky IN drops of water, POURED means to flow IN large quantities, and TEEMED means to be filled with a great number of things. All three words accurately describe a heavy rain, which is what is meant by the phrase 'CAME DOWN IN BUCKETS'.