The term 'roomy kind of sleeve' can be summarized by the crossword solution 'RAGLAN, ' which is a type of sleeve that is characterized by its roominess. RAGLAN sleeves are constructed with a diagonal seam that runs from the neckline to the underarm, creating a wide armhole and a loose fit. This style of sleeve is often used in casual clothing, such as t-shirts and sweatshirts, and is also popular in athletic wear.