单幅 is a noun referring to a single width of fabric, typically used in textiles and sewing (e.g., 单幅布 meaning 'single-width cloth'). However, the input pinyin 'chán' is almost certainly a data error — this term is standardly pronounced dān fú, not chán. The character 单 is only read chán in the ancient title 单于 (Chányú, a Xiongnu ruler). Use this entry with caution; the intended reading is likely dān.