訓 た(つ),ことわ(る),さだ(める) ・ 音 ダン
漢越音: đoạn
Axe 斤 on the right chopping through bundled threads on the left, so it means sever or refuse (Han Viet doan, as in doan tuyet = break off).
Stroke data: KanjiVG (CC BY-SA 3.0) — kanjivg.tagaini.net
彼の誘いを断りました。 (かれのさそいをことわりました)
I turned down his invitation.