开单

开单	kāi dān	to bill / to open a tab
开	kāi	to open (transitive or intransitive) / (of ships, vehicles, troops etc) to start / to turn on; to put in operation; to operate; to run / to boil / to write out (a prescription, check, invoice etc) / (directional complement) away; off / carat (gold) / abbr. for Kelvin, 开尔文 / abbr. for 开本, book format
单	Shàn	surname Shan
单	chán	used in 单于
单	dān	bill / list / form / single / only / sole / odd number / CL:个