Readings
Meanings
Radicals and components
Components
How it's built洞
→ →
Mnemonic (RtK)
ⓘwater (水) · water droplets (氵) · water pistol (氵) · same · monks · hood (冂) · one (一) · mouth (口)
From "Remembering the Kanji" by James Heisig · Frame 193
Additional Examples
He has a deep insight into human psychology.tatoeba He gave them the benefit of his insight.tatoeba Practice Writing
Practice Writing 洞
Draw with a guide, then from memory — checked at every step