電瓶膽 [电－胆]

Jyutping din6 ping4 daam2
Pinyin diàn píng dǎn

Definitions (Wiktionary)
  1. noun, Hokkien, Quanzhou, Xiamen
    glass liner of a thermos flask
    (syn.) 瓶膽, 电仁, 电罐仁, 電仁, 電罐仁, 瓶胆