頂頷 [顶颔]

Jyutping ding2 ham5
Pinyin dǐng hàn

Definitions (Wiktionary)
  1. noun, Min-Nan, dated, in Xiamen and Zhangzhou
    palate; upper jaw; maxilla
    (syn.) 上颌, 上顎, 上疆, 上岸, 上颚, 上頜, 天花板