| Answer | Crossword Clue |
|---|---|
| resonator | a resonating body or device for increasing sound |
| resonators | RESONATOR, a resonating body or device for increasing sound |
| amplifiers | An electronic device for increasing the amplitude of electrical signals, used chiefly in sound reproduction |
| boosters | A device for increasing electrical voltage or signal strength |
| atlatls | rigid device for increasing the speed and distance of a spear when thrown, usually a flat wooden stick with a handhold and a peg or socket to accommodate the butt end of the spear |
| atlatl | rigid device for increasing the speed and distance of a spear when thrown, usually a flat wooden stick with a handhold and a peg or socket to accommodate the butt end of the spear |
