鐵粉 [铁－]

Jyutping tit3 fan2
Pinyin tiě fěn

Definitions (粵典–words.hk)
  1. 名詞
    非常​忠心​擁​護​嘅​粉​絲
    die-hard fan
Definitions (Wiktionary)
  1. noun
    iron powder
  2. noun, slang
    passionate fan

鐵粉 [铁－]

Jyutping
Pinyin tiě fěn

Definitions (CC-CEDICT)
  1. (slang) hardcore fan (abbr. for 鐵桿粉絲|铁杆粉丝[tie3 gan3 fen3 si1])