穴

Kanji: 穴
Level: N2
Meaning: hole
On'yomi: ケツ
Kun'yomi: あな
Strokes: 5
Common compounds: 空穴 (くうけつ - empty hole) 落とし穴 (おとしあな - pitfall)
Memory hook: A roof (宀) over a person trying to dig a hole.