尺骨 Traditional form: 尺骨 Pinyin (reading): chǐgǔ Definitions: ulna (anatomy) bone of the forearm Characters: 尺 - ruler, tape-measure; unit of length, about 1 ft. 骨 - bone; skeleton; frame, framework Traditional characters: 尺 - ruler, tape-measure; unit of length, about 1 ft. 骨 - bone; skeleton; frame, framework