E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
On the tapis. On the carpet; under consideration, now being ventilated. An English-French phrase, referring to the tapis or cloth with which the table of the council-chamber is covered, and on which are laid the motions before the House.
My business comes now upon the tapis.Farquhar The Beaux Stratagem, iii. 3.