Japanese Kanji
厲rei
whetstone · grind · sharpen
Extended kanji · 15 strokes
Whetstone, grind, sharpen, whet, encourage.
厲 is a Extended kanji — used in Japanese personal names and specialised writing. With 15 strokes, it appears in classical literature, place names, and formal documents.
Start with hiragana and katakana — the foundation of Japanese reading.