colloq. [f. FLOOR v.] Something that ‘floors’ or discomfits one; also, a fatal blunder (in a calculation, etc.).
1841. R. W. Church, Let., 21 March, in Life & Lett. (1894), 34. The Heads show that they feel it rather a floor for the present, by affecting to consider it. Ibid. (1846), 72. We may be caught out in some ‘floor,’ but if we are not, I shall be very proud of the planet all my life long.
