| FLIPPHONE | Communication device also called a clamshell |
| TOGO | Like food in a clamshell box |
| RAMP | Half-pipe or vert for performing tricks on a skateboard; or, a trafficcalming device also called a sleeping policeman or a speed bump (4) |
| STOPWATCH | With an early example invented by horologist Samuel Watson, a device also called a chronograph for timing races and lap times or "splits" (9) |
| RAINGAUGE | Device also called a pluviometer |
| JETPACK | Device also called a rocket belt |
| MUTE | Musician's device also called a sordino |
| CDWRITER | PC device also called a burner |
| DIODE | Device also called a rectifier |
| GPS | Device also called a satnav |
| POLARIS | Navigational device, also called a dumb compass, for maintaining bearings at sea (7) |
| LIFT | Device also called an elevator for transporting people or goods between floors of a building; or, a free ride in another person's car (4) |
| PHOTOCELL | Device also called an electric eye |
| PETROLBOMBS | Incendiary devices also called Molotov cocktails (6,5) |
| FLAGS | Stone slabs; devices also called colours, ensigns, standards and vexilla; mastheads; or, bushy tails (5) |
| OUIJA | Device also known as a spirit board (5) |
| SLIDERULE | Device also known as a slipstick |
| PHOTOSTAT | Early photocopier device also known as a rectigraph, ... machine |
| RAZOR | Clamshell, for a Neanderthal |
| ESPRINGAL | 11th/12th century mechanical artillery device also known as a 'skein-bow' (9) |
