擰緊 [拧紧]

Jyutping ning6 gan2
Pinyin níng jǐn

Definitions (CC-CANTO)
  1. to tighten something by twisting
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）
Examples (Wiktionary)
  1. Mandarin
    拧紧螺丝
    擰緊螺絲
    nǐng jǐn luó sī
    • to tighten a screw