油灰刀 yóuhuīdāo putty knife Definitions Defs Origin Strokes Stroke Words Sentences Sents 油灰 yóuhuī putty A paste made from boiled tung oil mixed with lime or gypsum, used for filling cracks in objects or as a waterproof sealant刀 dāo noun knife knife; blade; single-edged sword; any tool used for cutting, slicing, or carving