電塗 [电涂]

Jyutping din6 tou4
Pinyin diàn tú

Definitions (Wiktionary)
  1. noun, Taiwanese-Hokkien
    calcium carbide
    (syn.) 电石, 臭塗, 電石, 臭涂
  2. noun, Min-Dong, Min-Nan, Puxian-Min
    battery (for civilian use)