gappy             
adjective  informal uk/ˈɡæp.i/ us/ˈɡæp.i/
 牙齿有缺口的;牙缝大的
with some teeth missing or with spaces between the teeth
  a gappy smile/grin 露出豁牙的微笑/大笑 
 I think his gappy teeth are cute.
  有洞的;有缺口的;有裂缝的
with some holes or spaces
  The hedge has become gappy.
 gappy floorboards 裂缝多的地板 
  有缺失的;不完整的
with some parts missing or not included; not complete
  The law is a little gappy in this area. 这方面的法律不太完善。 
 - More examples
 - He gave me a gappy grin.
 - I was a social misfit, with thick spectacles and gappy teeth.
 - The kids are so cute with their gappy smiles and freckled faces.
 - The shrubs have gappy growth at the top.
 - He could see through the gappy fence.
 - They provided an entertaining, if rather gappy, history of computing.