破折號 [－－号]

Jyutping po3 zit3 hou2
Pinyin pò zhé hào

Definitions (粵典–words.hk)
  1. 名詞
    中文​嘅​標​點​符​號​「​─​─​」​。​通常​用法​包括​：​喺​句子​中間​或者​最​後​插入​説​明​或者​解釋​；​突然​改變​話題​或​語氣​；​模擬​拖長​聲音​。​（​量​詞​：​個​）
    (Chinese punctucation) counterpart of the em dash

破折號 [－－号]

Jyutping po3 zit3 hou6
Pinyin pò zhé hào

Definitions (CC-CEDICT)
  1. dash
  2. Chinese dash ── (punct., double the length of the western dash)
Definitions (粵典–words.hk)
  1. 名詞
    中文​嘅​標​點​符​號​「​─​─​」​。​通常​用法​包括​：​喺​句子​中間​或者​最​後​插入​説​明​或者​解釋​；​突然​改變​話題​或​語氣​；​模擬​拖長​聲音​。​（​量​詞​：​個​）
    (Chinese punctucation) counterpart of the em dash
Definitions (Wiktionary)
  1. noun
    a Chinese punctuation consisting of two continuous em dashes: ⟨——⟩ (U+2014, sometimes a box-drawing character: ⟨──⟩ [U+2500] is used instead), used similarly but not identically to an English dash
    (syn.) 破折號, 破折號兒