[f. as prec. + EDGE.] The fine edge of a board, etc. that thins off to one side, so as to resemble a wedge in section.
1785. Roy, in Phil. Trans., LXXV. 396. A line … being brought to coincide with the feather edge.
attrib. 1616. MS. Acc. St. John’s Hosp., Canterb., For saing of fetheredg bourd.
1703. T. N., City & C. Purchaser, 40. Feather-edge, Are a sort of Bricks formerly used in some parts of Kent and Sussex, they being of the same Size with Statute-bricks, but made thinner at one edge, than they are at the other.
1703. Moxon, Mech. Exerc., 160. Feather-edge, Boards, or Planks, that have one edge thinner than another are called Feather-edge stuff.
1874. Knight, Dict. Mech., Feather-edge File. A file with an acute edge; the cross-section of the file being an isosceles triangle with a short base.
1883. Hendon Times, 5 May, 5/2. Quantity of shop-shutters, feather-edge boards, cupboard fronts.
