滑牙 [－－]

Jyutping waat6 ngaa2
Pinyin huá yá

Definitions (粵典–words.hk)
  1. 動詞
    螺​絲​嘅​上面​嘅​紋​磨​蝕​咗​，​令到​螺絲​批扣​唔​實粒​螺絲
    (of screws) to strip
  2. 動詞
    引申​指一個​人​做​嘢​太​辛苦​，​體力​、​精神​透支
    to be worn out
    • 做到滑晒牙
      做到滑晒牙
  3. 參看
    滑啞
Definitions (Kaifangcidian)
  1. 擰不緊 – 拧不紧
  2. 上不緊 – 上不紧
  3. 咬合不良

滑牙 [－－]

Jyutping waat6 ngaa4
Pinyin huá yá

Definitions (CC-CANTO)
  1. a phenomenon where the threads of the screws or bolts are too worn to be used with a screwdriver
Definitions (Wiktionary)
  1. verb, intransitive, of a screw
    to be stripped
Examples (粵典–words.hk)
  1. Cantonese
    滑牙
    滑牙
    waat6 ngaa2
    • stripped screw