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