打單

Verb

 * 1)  to write a letter as a means of extortion or ransom
 * 2)  to take apart a set
 * 3)  to buy a ticket
 * 4)  to become only one
 * 5)  to buy single-layer clothing
 * 6)  to not form a pair
 * 7)  to wear on its own
 * 8)  to have frost appear

Adverb

 * 1)  alone; by oneself; solitary