Source : Webster's Revised Unabridged Dictionary (1913)

Eaves \Eaves\, n. pl. [OE. evese, pl. eveses, AS. efese eaves,
   brim, brink; akin to OHG. obisa, opasa, porch, hall, MHG.
   obse eaves, Icel. ups, Goth. ubizwa porch; cf. Icel.
   upsar-dropi, OSw. ops["a]-drup water dropping from the eaves.
   Probably from the root of E. over. The s of eaves is in
   English regarded as a plural ending, though not so in Saxon.
   See {Over}, and cf. {Eavesdrop}.]
   1. (Arch.) The edges or lower borders of the roof of a
      building, which overhang the walls, and cast off the water
      that falls on the roof.

   2. Brow; ridge. [Obs.] ``Eaves of the hill.'' --Wyclif.

   3. Eyelids or eyelashes.

            And closing eaves of wearied eyes.    --Tennyson.

   {Eaves board} (Arch.), an arris fillet, or a thick board with
      a feather edge, nailed across the rafters at the eaves of
      a building, to raise the lower course of slates a little,
      or to receive the lowest course of tiles; -- called also
      {eaves catch} and {eaves lath}.

   {Eaves channel}, {Eaves gutter}, {Eaves trough}. Same as
      {Gutter}, 1.

   {Eaves molding} (Arch.), a molding immediately below the
      eaves, acting as a cornice or part of a cornice.

   {Eaves swallow} (Zo["o]l.).
      (a) The cliff swallow; -- so called from its habit of
          building retort-shaped nests of mud under the eaves of
          buildings. See {Cliff swallow}, under {Cliff}.
      (b) The European swallow.