Across
- 3. something that gives off light
- 5. having a circular ends and straight sides
- 8. legal documents that make it so no one else can sell your invention
- 9. worked in a rough, uneven way
Down
- 1. move slowly and noisily
- 2. machine that plays recorded sound
- 4. engines that make a train go foward
- 6. specialized machines or electronic devices
- 7. complete failure