叫珠子 [－－－]

Jyutping giu3 zyu1 zi2
Pinyin jiào zhū zi

Definitions (Wiktionary)
  1. noun, Xiang
    whistle (device used to make a whistling sound)
    (syn.) 觱仔, 觱觱仔, 哨子, 委瑣, 委琐