鐵桿 [铁杆]

Jyutping tit3 gon1
Pinyin tiě gǎn

Definitions (CC-CEDICT)
  1. iron rod
  2. zealous
  3. die-hard
Definitions (Wiktionary)
  1. noun
    iron club
  2. noun, figuratively
    persistent or headstrong person
  3. adj, attributive, of a fan
    loyal and reliable; diehard
  4. adj, attributive, of a traitor
    out-and-out; diehard

鐵桿 [铁杆]

Jyutping tit3 gon1
Pinyin tiě gān

Definitions (CC-CEDICT)
  1. iron (golf club)
Definitions (兩岸三地生活差異詞語彙編—Two Shores Three Places)
  1. 日常用語：臺
    忠心耿耿
  2. 日常用語：陸
    鐵桿