頕頭 [－头]

Jyutping daam1 tau4
Pinyin dān tóu

Definitions (Wiktionary)
  1. verb, Taiwanese-Hokkien
    to greet (someone) with a nod
  2. verb, Quanzhou, Xiamen, Zhangzhou-Hokkien
    to hang one's head low
  3. verb, Hokkien
    to nod (one's head)