合龍 [－龙]

Jyutping hap6 lung4
Pinyin hé lóng

Definitions (CC-CEDICT)
  1. to join the two sections (of a linear structure: bridge, dike etc) to complete its construction
Definitions (Wiktionary)
  1. verb, of a bridge or dam under construction
    to have its last gap closed
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）