The Collaborative International Dictionary of English v.0.48:

Shriek \Shriek\, n.
   A sharp, shrill outcry or scream; a shrill wild cry such as
   is caused by sudden or extreme terror, pain, or the like.
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         Shrieks, clamors, murmurs, fill the frighted town.
                                                  --Dryden.
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   Shriek owl. (Zool.)
   (a) The screech owl.
   (b) The swift; -- so called from its cry.
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The Collaborative International Dictionary of English v.0.48:

Swift \Swift\, n.
   1. The current of a stream. [R.] --Walton.
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   2. (Zool.) Any one of numerous species of small, long-winged,
      insectivorous birds of the family Micropodidae. In form
      and habits the swifts resemble swallows, but they are
      destitute of complex vocal muscles and are not singing
      birds, but belong to a widely different group allied to
      the humming birds.
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   Note: The common European swift (Cypselus apus syn.
         Micropus apus) nests in church steeples and under the
         tiles of roofs, and is noted for its rapid flight and
         shrill screams. It is called also black martin,
         black swift, hawk swallow, devil bird,
         swingdevil, screech martin, and shriek owl. The
         common American, or chimney, swift (Chaetura
         pelagica) has sharp rigid tips to the tail feathers.
         It attaches its nest to the inner walls of chimneys,
         and is called also chimney swallow. The Australian
         swift (Chaetura caudacuta) also has sharp naked tips
         to the tail quills. The European Alpine swift
         (Cypselus melba) is whitish beneath, with a white
         band across the breast. The common Indian swift is
         Cypselus affinis. See also Palm swift, under
         Palm, and Tree swift, under Tree.
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   3. (Zool.) Any one of several species of lizards, as the pine
      lizard.
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   4. (Zool.) The ghost moth. See under Ghost.
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   5. [Cf. Swivel.] A reel, or turning instrument, for winding
      yarn, thread, etc.; -- used chiefly in the plural.
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   6. The main card cylinder of a flax-carding machine.
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