2. Able to cut
5. Nuts
6. Go in for
9. Friend
11. Yes
12. Throw out
14. Flying insect
15. Started

Down

1. Gradient
2. Skin that covers the top of the head
3. Leap on one foot
4. Regulation
7. Tower supporting electical cables
8. Boat
10. Wheel shaft
13. Large flightless bird