put the tin hat on (something)

put the tin hat on (something)

To finalize or mark the end of something, especially in a forceful, decisive, or dramatic way. Primarily heard in UK. What put the tin hat on it for me was his insistence that we maintain the same direction for the next financial year. I resigned the very next day. The downgrading of the company's credit rating puts the tin hat on a disastrous year for their financial situation.
See also: hat, on, put, tin
Farlex Dictionary of Idioms.
See also:
  • ram (something) home
  • ram something home
  • hammer (something) home
  • hammer home
  • a kick up the backside
  • cram together
  • knock (someone or something) out of (someone or something)
  • knock out of
  • push against