皮带
pí dài · HSK 7
leather belt
皮 (leather/skin) + 带 (band) = a leather band, i.e. a belt
皮 pí means hide or leather and 带 dài means band or strap; together they name the leather band you cinch around your waist. The dài part also shows up in other strap-like words.
皮 — hand 又 stripping hide off animal
皮 is a pictograph showing a hand (又) peeling the skin or hide off an animal carcass. The original meaning was 'animal hide' or 'to flay,' which broadened over time to mean skin, leather, or any outer covering or surface.
带 — belt/sash 巾 at bottom + ornaments above
带 originally pictured a belt or sash with hanging ornaments or pendants tied at the waist; the bottom 巾 (cloth) reinforces the textile meaning. From the literal 'belt' it extended to 'carry, bring along' (as a belt holds things) and to 'zone/region' (a strip of land).