盏
zhǎn · HSK 7
classifier for lamps
🪔 戋 small + 皿 dish on bottom = a little oil-lamp saucer; counts lamps: 一盏灯
盏 is the measure word for lamps and lights. The 皿 radical at the base means vessel or dish, and 戋 on top carries a small or shallow sense, so the character is literally a little shallow saucer, the kind that once held lamp oil.
盏 — dish 皿 + 戋 (small/phonetic)
盏 combines the radical 皿 (dish, vessel) on the bottom with 戋, which signals the sound and originally meant 'small' or 'slight'. The character thus depicts a small vessel, and its core meaning is a shallow cup or oil lamp. Today it is also the measure word for lamps.