[齿--]

Jyutping maa5 ci2 tou4 zang1
Pinyin mǎ chǐ tú zēng

Definitions (CC-CEDICT)
  1. (self-deprecating) to have grown old without accomplishing anything (idiom)
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)