a whetstone

whetstone
(bound form) a fine-grained whetstone or grindstone used for sharpening blades
to grind
(bound form) to sharpen or grind something on a whetstone
baffle pier
(bound form) a baffle pier or obstruction in a stream used to break the force of the water; also describes a flat surface like a whetstone
to hone
(bound form) to temper oneself or improve one's conduct; to practice self-cultivation

Frequency

Character
Written text
4,166th most common 2.47 per million
Movie subtitles
4,271st most common 0.340 per million appears in 0% of films
Word
Written text
0.609 per million

Details

Strokes
10
Unicode
U+7825

Sources