full stop; end of the matter
A todas estas frases les falta el punto final.
All these sentences are missing a period.
Es hora de ponerle un punto final a esto.
It's time to put an end to this.
Le hubieras dicho que estoy bien, y punto final.
You should have told him I was fine, and that would be that.
Por favor, añade un punto final al final de tu frase.
Please add a period at the end of your sentence.
La policía va a poner punto final a esto.
The police are going to put an end to this.