The term 'HAND OR FOOT' can be broken down into two crossword solutions: UNIT (4 letters) and EXTREMITY (9 letters). UNIT is a general term for any individual thing, object, or concept, while EXTREMITY refers to the outermost parts of the body, such as the hands and feet. Together, these two words refer to the hands and feet, which are two of the most important extremities of the human body. They are used for a variety of tasks, from writing and typing to walking and running.