小白鼠 [－－－]

Jyutping siu2 baak6 syu2
Pinyin xiǎo bái shǔ

Definitions (CC-CEDICT)
  1. white mouse
  2. lab mouse
  3. lab rat
  4. (fig.) human guinea pig
Definitions (Wiktionary)
  1. noun, figuratively
    lab rat; guinea pig (subject of an experiment or test)
  2. noun
    laboratory rat; lab rat