The right of sitting in the presence of the queen. In the ancient French court certain ladies had the droit de tabouret (right of sitting on a tabouret in the presence of the queen). At first it was limited to princesses: but subsequently it was extended to all the chief ladies of the queen's household; and later still the wives of ambassadors, dukes, lord chancellor, and keeper of the seals, enjoyed the privilege. Gentlemen similarly privileged had the droit de fauteuil.
Qui me resisterait La marqurse a le tabouret.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894