noon
A large number of knights and nobles , as well as a great concourse of common people gradually assembled from all parts of the territory . The consequence was , that the court-city became too narrow for the inhabitants , and therefore Libussa called her people in office to her , and ordered them to build a city on the spot where they should find a man who knew how to make the wisest use of teeth at noon . They went out and found at the appointed time a man who was busied in sawing a block asunder . They decided that this industrious person made an incomparably better use of the teeth of his saw at noon than the parasite made of the teeth in his jaws at the table of the great , and they did not doubt that they had found the place which the princess had appointed for the foundation of the new city . They therefore drew the ploughshare round the field to mark the compass of the city wall . On asking the working man what he intended to make out of the piece of wood he was cutting , he answered : `` Prah , '' which in the Bohemian tongue signifies the threshold of a door . Libussa therefore called the new city Praha , that is Prague , the well-known royal city on the Moldau in Bohemia .