WHOLE CHARACTER
末
the tip; the thin end of a branch; the last; the end of a period (末日,期末); the lesser; the nonessential (舍本逐末); tiny bits; powder (碎末,粉末)
末 is the tip or the end: 周末 'weekend', 期末 'end of term', 粉末 'powder'.
Taught as one complete written unit. ZDIC: 指事 — a long top stroke added to 木 marks the tip of a branch; no parts are drawn.