西瓜波 [－－－]

Jyutping sai1 gwaa1 bo1
Pinyin xī guā bō

Definitions (粵典–words.hk)
  1. 名詞
    一種​用​硬​塑膠​殼​造​嘅​波​，​入面​空心​，​外面​紅​白色​相間​（​量​詞​：​個​）
    ball with red and white strips made from hard plastic; literally: watermelon ball