| Subject | English | Irish |
| environ. | button-cell battery | ceallra cnapchille |
| environ. | button-cell battery A tiny, circular battery made for a watch or for other microelectric applications | ceallra cnapchille |
| comp., MS | button face | aghaidh cnaipe (The surface of a button where text or an image (typically indicating the button's function) may be displayed) |
| mech.eng. | button out | scoradán ciorcaid tarraingthe |
| mech.eng. | button out | díscortha |
| comp., MS | push-button reset | athshocrú tapa (The ability to easily return a PC to a prior state, either by reinstalling Windows and keeping their files or by resetting the PC to the original factory state) |
| transp. | push-button signalised crossing | trasrian soilsithe coisithe |