钉子

釘子
dīngzi
  1. nail
  2. snag
  3. saboteur

CEDICT

Entry Composition

1 钉 dīng
  1. nail
  2. to follow closely
  3. to keep at sb (to do sth)
  4. variant of 盯 dīng
2 子 zi noun suffix, as in 椅子 yǐzi "chair"