滴 On the HSK 6 vocabulary list, at CEFR level C2. dī ㄉㄧ to drip to let drip to apply (eye drops etc) a drop (of liquid) bound form classifier for drops of liquid Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0 国际中文教育中文水平等级标准, 中华人民共和国教育部, MIT