耳綿 [－绵]

Jyutping ji5 min4
Pinyin ěr mián

Definitions (粵典–words.hk)
  1. 名詞
    裝上​入耳式​耳機度​，​隔音​效果​好過​普通​嘅​耳​機​膠
    foam earphone tips