A shirt part is any component of a shirt that contributes to its overall design and function. The four letter solution for the crossword clue 'CUFF' refers to the band of fabric at the end of a SLEEVE, which can be fastened with buttons or other closures. The six letter solution for the crossword clue 'COLLAR' refers to the band of fabric around the neck of a shirt, which can also be fastened with buttons or other closures. The four letter solution for the crossword clue 'TAIL' refers to the bottom of a shirt, which is usually longer than the front and back of the shirt. The seven letter solution for the crossword clue 'ARMHOLE' refers to the opening in the side of a shirt where the ARM is inserted. The six letter solution for the crossword clue 'SLEEVE' refers to the fabric tube that covers the ARM from the shoulder to the wrist. The three letter solution for the crossword clue 'ARM' refers to the upper limb of the human body, which is covered by the SLEEVE of a shirt.