杯
さかずき · sakazuki · JLPT N1 · noun
cup
🍷 乾杯 kanpai = 乾 dry + 杯 cup: a toast means drinking your whole cup dry
The 木 (wood) radical on the left of 杯 reflects old cups carved from wood. Kanpai, the toast, literally means the cup is emptied.
杯 — wood radical 木 + 不 (phonetic)
杯 is a semantic-phonetic compound. The 木 radical signals wood, since ancient cups were carved from wood, while 不 hints at the sound. Originally written 桮, it came to mean any cup or glass regardless of material.