অর্থ : Being precise with regard to a prescribed or specified criterion.
উদাহরণ :
His guess was on the nose.
The prediction for snow was right on the button.
সমার্থক : on the nose
অর্থ : Just as it should be.
উদাহরণ :
`Precisely, my lord,' he said.
সমার্থক : exactly, on the dot, on the nose, precisely
On the button meaning in Bengali (Bangla).