灰背隼 huībèisǔn merlin Origin Definitions Defs Strokes Stroke Words Sentences Sents 灰 huī adjective gray the color between black and white; ash-colored背 bèi noun back the back of a person or animal隼 sǔn noun falcon falcon; bird of prey in the hawk family. Known for sharp vision and fast flight; often trained by humans for hunting. Also known as 鹘 hú