The term 'BROOM's Kin' is a crossword solution that can be filled in with the three-letter word 'MOP'. A MOP is a cleaning tool made of absorbent material, such as cotton or synthetic fibers, attached to a handle. It is used to clean floors and other surfaces by soaking up liquids and dirt. Mops are often used in combination with a bucket of water and cleaning solution. The term 'BROOM's Kin' is a reference to the fact that mops and brooms are both cleaning tools.