DICT.TW Dictionary Taiwan

 latch·string /-ˌstrɪŋ/
 栓鎖帶

 Latch·string n. A string for raising the latch of a door by a person outside. It is fastened to the latch and passed through a hole above it in the door.
 To find the latchstring out, to meet with hospitality; to be welcome. (Intrusion is prevented by drawing in the latchstring.) [Colloq. U.S.]
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 latchstring
      n : opener consisting of a string that can be passed through a
          hole in a door for raising the latch from outside