hone

nouns

a whetstone made of fine gritstone; used for sharpening razors
hone
is a type of (narrower)
a flat stone for sharpening edged tools or knives
whetstone

verbs

sharpen with a hone
"hone a knife"
hone
is a type of (narrower)
make sharp or sharper
"sharpen the knives"
sharpen
make perfect or complete
"perfect your French in Paris!"
hone, perfect