be/get thin on top

be thin on top

To be balding. This phrase refers to thinning hair on the top of one's head. I should have known I would be thin on top by 30—none of the older men in my family have much hair.
See also: on, thin, top

get thin on top

To become bald. This phrase refers to thinning hair on the top of one's head. I should have known I would get thin on top by 30—none of the older men in my family have much hair.
See also: get, on, thin, top
Farlex Dictionary of Idioms.

be/get thin on ˈtop

(informal) without much hair on the head; be/go bald: Max is only 30 but he’s already getting a bit thin on top.
See also: get, on, thin, top
Farlex Partner Idioms Dictionary
See also:
  • be thin on top
  • thin on top
  • get thin on top
  • come on top of
  • come on top of (something)
  • storey
  • top story
  • top
  • top (oneself)
  • on top of the world