1. officer (biblical)

2. major general (law enforcement)

3. extra (acting)

4. hilt, handle (of a knife, sword, etc.)

5. petiole (botany)

6. pedicel (botany)

7. quill, calamus (ornithology)

8. perpendicular (line or plane that is at a right angle to another) (geometry)

9. leg, cathetus (side in a triangle) (geometry)