What is the purpose of a fuller on a sword?

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Tags

1. #achieved
2. #blade
3. #fullers
4. #fuller
5. #grooves
6. #called
7. #allows
8. #purpose
9. #given
10. #these
11. #shape
12. #often
13. #their
14. #material
15. #although
16. #gutters
17. #nothing
18. #lighten
19. #blood
20. #strength
21. #amount