[线]

Jyutping waan4 sin3
Pinyin huán xiàn

Definitions (CC-CEDICT)
  1. ring road
  2. circle line (e.g. rail or subway)
Definitions (Wiktionary)
  1. noun
    circular route in public transport
    (syn.) 环状线, 循環線, 循环线, 環狀線
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)