幹

Kanji: 幹
Level: N2
Meaning: tree trunk
On'yomi: カン
Kun'yomi: みき
Strokes: 13
Common compounds: 新幹線 (しんかんせん) Shinkansen 幹部 (かんぶ) management
Memory hook: The shield (干) for a tree (木) is its sturdy trunk.