滑牙 (waat6 ngaa2) — (of a screw or bolt) to be stripped in Cantonese
waatˍ₆滑ngaaˊ²牙Mandarin Pinyin: hua2 ya2
Meaning of 滑牙
noun(of a screw or bolt) to be stripped
nouna phenomenon where the threads of the screws or bolts are too worn to be used with a screwdriver