Pond snail

from The Collaborative International Dictionary of English v.0.48
Snail \Snail\ (sn[=a]l), n. [OE. snaile, AS. sn[ae]gel, snegel,
   sn[ae]gl; akin to G. schnecke, OHG. snecko, Dan. snegl, Icel.
   snigill.]
   1. (Zool.)
      (a) Any one of numerous species of terrestrial
          air-breathing gastropods belonging to the genus Helix
          and many allied genera of the family {Helicidae}. They
          are abundant in nearly all parts of the world except
          the arctic regions, and feed almost entirely on
          vegetation; a land snail.
      (b) Any gastropod having a general resemblance to the true
          snails, including fresh-water and marine species. See
          {Pond snail}, under {Pond}, and {Sea snail}.
          [1913 Webster]

   2. Hence, a drone; a slow-moving person or thing.
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   3. (Mech.) A spiral cam, or a flat piece of metal of spirally
      curved outline, used for giving motion to, or changing the
      position of, another part, as the hammer tail of a
      striking clock.
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   4. A tortoise; in ancient warfare, a movable roof or shed to
      protect besiegers; a testudo. [Obs.]
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            They had also all manner of gynes [engines] . . .
            that needful is [in] taking or sieging of castle or
            of city, as snails, that was naught else but hollow
            pavises and targets, under the which men, when they
            fought, were heled [protected], . . . as the snail
            is in his house; therefore they cleped them snails.
                                                  --Vegetius
                                                  (Trans.).
      [1913 Webster]

   5. (Bot.) The pod of the sanil clover.
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   {Ear snail}, {Edible snail}, {Pond snail}, etc. See under
      {Ear}, {Edible}, etc.

   {Snail borer} (Zool.), a boring univalve mollusk; a drill.

   {Snail clover} (Bot.), a cloverlike plant ({Medicago
      scuttellata}, also, {Medicago Helix}); -- so named from
      its pods, which resemble the shells of snails; -- called
      also {snail trefoil}, {snail medic}, and {beehive}.

   {Snail flower} (Bot.), a leguminous plant ({Phaseolus
      Caracalla}) having the keel of the carolla spirally coiled
      like a snail shell.

   {Snail shell} (Zool.), the shell of snail.

   {Snail trefoil}. (Bot.) See {Snail clover}, above.
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from The Collaborative International Dictionary of English v.0.48
Pond \Pond\, n. [Probably originally, an inclosed body of water,
   and the same word as pound. See {Pound} an inclosure.]
   A body of water, naturally or artificially confined, and
   usually of less extent than a lake. "Through pond or pool."
   --Milton.
   [1913 Webster]

   {Pond hen} (Zool.), the American coot. See {Coot}
   (a) .

   {Pond lily} (Bot.), the water lily. See under {Water}, and
      Illust. under {Nymph[ae]a}.

   {Pond snail} (Zool.), any gastropod living in fresh-water
      ponds or lakes. The most common kinds are air-breathing
      snails (Pulmonifera) belonging to Limn[ae]a, Physa,
      Planorbis, and allied genera. The operculated species are
      pectinibranchs, belonging to {Melantho}, {Valvata}, and
      various other genera.

   {Pond spice} (Bot.), an American shrub ({Tetranthera
      geniculata}) of the Laurel family, with small oval leaves,
      and axillary clusters of little yellow flowers. The whole
      plant is spicy. It grows in ponds and swamps from Virginia
      to Florida.

   {Pond tortoise}, {Pond turtle} (Zool.), any freshwater
      tortoise of the family {Emydid[ae]}. Numerous species are
      found in North America.
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from The Collaborative International Dictionary of English v.0.48
Limnaea \Lim*n[ae]"a\ (l[i^]m*n[=e]"[.a]), prop. n. [NL., fr.
   Gr. limnai^os pertaining to a marsh, fr. li`mh a marsh.]
   (Zool.)
   A genus of fresh-water air-breathing mollusks, abundant in
   ponds and streams; -- called also {pond snail}. [Written also
   {Lymn[ae]a}.]
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