藍絲 [蓝丝]

Jyutping laam4 si1
Pinyin lán sī

Definitions (粵典–words.hk)
  1. 名詞、香港
    持親​政府​立​場​嘅​香港​人​，​係​陣營象​徵​「​藍絲帶​」​嘅​簡​稱​；​同黃絲​相對​（​量​詞​：​個​）
    (Hong Kong) supporter of the government; literally: blue ribbon
  2. 反義詞
    黃絲
Definitions (Wiktionary)
  1. noun
    supporter of the Hong Kong Police Force and the Hong Kong government