鉛筆鉛 [铅笔铅]

Jyutping jyun4 bat1 jyun4
Pinyin qiān bǐ qiān

Definitions (Wiktionary)
  1. noun
    pencil lead; pencil refill
    (syn.) 筆鉛, 笔铅, 笔芯, 鉛筆芯, 筆芯, 铅笔芯