a type of ballpoint pen
một loại bút bi
a device containing a ball that is used instead of a mouse to move the cursor around the screen
một thiết bị chứa một quả bóng được sử dụng thay cho chuột để di chuyển con trỏ quanh màn hình
Definition of rollerball
rollerballnoun
Bóng lăn
/ˈrəʊləbɔːl//ˈrəʊlərbɔːl/The word "rollerball" has a fascinating origin story. It's a blend of two words: "roller" and "ball." The "roller" part refers to the roller skates worn by the players in the sport, while the "ball" signifies the object used in the game, similar to a football but much larger. This combination arose in the 1970s when the sport was invented and gained popularity. The name perfectly captures the essence of the game, combining the speed of roller skates with the intensity of a ball game.
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