白眼狼 [－－－]

Jyutping baak6 ngaan5 long4
Pinyin bái yǎn láng

Definitions (CC-CEDICT)
  1. thankless wretch
  2. an ingrate
Definitions (Wiktionary)
  1. noun, colloquial, derogatory, figuratively
    ingrate; ungrateful person (especially of a child)