hone /həʊn $ hoʊn/ BrE AmE verb [transitive]
[ Date: 1800-1900 ; Origin: hone 'stone for making things sharp' (14-19 centuries) , from Old English hon 'stone' ]
1 . to improve your skill at doing something, especially when you are already very good at it:
He set about honing his skills as a draughtsman.
finely honed (=extremely well-developed) intuition
2 . formal to make knives, swords etc sharp SYN sharpen