feather-edge

from The Collaborative International Dictionary of English v.0.48

Feather-edge \Feath"er-edge`\, n.
   1. (Zool.) The thin, new growth around the edge of a shell,
      of an oyster.
      [1913 Webster]

   2. Any thin, as on a board or a razor.
      [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

36 Moby Thesaurus words for "featheredge":
      bank, board, border, bordure, brim, brink, brow, coast,
      cutting edge, edge, edge tool, flange, frame, fringe, hem,
      knife-edge, labellum, labium, labrum, ledge, limb, limbus, lip,
      list, marge, margin, ragged edge, razor-edge, rim, selvage, shore,
      side, sideline, skirt, verge, weapon

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