訂書釘 [订书钉]

Jyutping deng1 syu1 deng1
Pinyin dìng shū dīng

Definitions (CC-CEDICT)
  1. staple (stationery)
Definitions (Wiktionary)
  1. noun
    staple (used to bind documents) (Classifier: 根 m)
    (syn.) 釘書釘, 巴钉, 钉书针, 釘書針, 巴釘, 钉书钉