| GUNBARREL | Hollow cylinder of a firearm (3,6) |
| TUBE | Long hollow cylinder of metal, plastic or glass (4) |
| BMW | Company whose headquarters resembles the cylinders of a four-cylinder engine |
| PIPES | Hollow cylinders of metal, or plastic, used for the conveyance of water. (5) |
| CIGARETTE | Short, tightly-rolled cylinder of tobacco wrapped in thin paper (9) |
| ROLL | A cylinder of gift-wrap or other paper; a strip of cloth or leather with pockets for paintbrushes, pencils, sewing kits or tools; or, a type of brass gilding wheel used in bookbinding (4) |
| MUFF | A person who is awkward at sport, thus a word for a botch, dropped/failed catch, mess-up, mishit or muddle; a bungler or duffer generally; or, a cylinder of fur for warming both hands (4) |
| AQUALUNG | This Jacques Cousteau invention consists of a regulator and cylinder of air in a harness attached to a diver's back |
| PISTON | A cylindrical piece moving to and fro in a hollow cylinder in engines and pumps (6) |
| CALIBRE | Inner diameter of the barrel of a firearm |
| PIPE | Which hollow cylinder is used for the conveyance of water, etc (4) |
| TUBULE | Tiny hollow cylinder |
| TUBER | Root right under hollow cylinder (5) |
| TUB | Shorten hollow cylinder for container (3) |
| SCROLL | Furl or cylinder of parchment or paper inscribed with text; or, a ribbon-like decorative motif, sometimes bearing a motto (6) |
| RAMROD | A metal bar that is used to clean the barrel of a firearm (6) |
| TRIGGER | A lever that activates the firing mechanism of a firearm (7) |
| BAYONET | A blade that may be attached to the muzzle of a firearm (7) |
| ROLLS | Buns; furled cylinders of cake, carpet, cloth, newspaper, parchment etc; strips of material with pockets for paintbrushes, pencils or tools; lists of names; trills; or, throws of dice (5) |
| BREACH | Opening part of a firearm, by the sound of it (6) |
