The term 'BUTCHER's tool' refers to the tools used by a BUTCHER in their profession. The three crossword solutions for this term are CLEAV (5 letters), CLEAVER (7 letters), and MEATAX (6 letters). A cleav is a large knife used for cutting meat, while a CLEAVER is a heavy knife with a rectangular blade used for chopping bones. A meatax is a tool used to tenderize meat. All of these tools are essential for a BUTCHER to do their job properly.