| Subject | English | Portuguese |
| comp., MS, Braz. | left mouse button | botão esquerdo do mouse (The button on your pointing device that you use most often for clicking and double-clicking) |
| comp., MS | left mouse button | botão esquerdo do rato (The button on your pointing device that you use most often for clicking and double-clicking) |
| comp., MS, Braz. | mouse button | botão do mouse (A movable piece on a device that is pressed to activate some function) |
| comp., MS, Braz. | primary mouse button | botão principal do mouse (The button on your pointing device that you use most often for clicking and double-clicking) |
| comp., MS | primary mouse button | botão primário do rato (The button on your pointing device that you use most often for clicking and double-clicking) |
| comp., MS, Braz. | right mouse button | botão direito do mouse (The button on your pointing device that you use to display shortcut menus or other program-specific features) |