The Collaborative International Dictionary of English v.0.48:

Paper \Pa"per\ (p[=a]"p[~e]r), n. [F. papier, fr. L. papyrus
   papyrus, from which the Egyptians made a kind of paper, Gr.
   pa`pyros. Cf. Papyrus.]
   1. A substance in the form of thin sheets or leaves intended
      to be written or printed on, or to be used in wrapping. It
      is made of rags, straw, bark, wood, or other fibrous
      material, which is first reduced to pulp, then molded,
      pressed, and dried.
      [1913 Webster]

   2. A sheet, leaf, or piece of such substance.
      [1913 Webster]

   3. A printed or written instrument; a document, essay, or the
      like; a writing; as, a paper read before a scientific
      society.
      [1913 Webster]

            They brought a paper to me to be signed. --Dryden.
      [1913 Webster]

   4. A printed sheet appearing periodically; a newspaper; a
      journal; as, a daily paper.
      [1913 Webster]

   5. Negotiable evidences of indebtedness; notes; bills of
      exchange, and the like; as, the bank holds a large amount
      of his paper.
      [1913 Webster]

   6. Decorated hangings or coverings for walls, made of paper.
      See Paper hangings, below.
      [1913 Webster]

   7. A paper containing (usually) a definite quantity; as, a
      paper of pins, tacks, opium, etc.
      [1913 Webster]

   8. A medicinal preparation spread upon paper, intended for
      external application; as, cantharides paper.
      [1913 Webster]

   9. pl. Documents establishing a person's identity, or status,
      or attesting to some right, such as the right to drive a
      vehicle; as, the border guard asked for his papers.
      [PJC]

   Note: Paper is manufactured in sheets, the trade names of
         which, together with the regular sizes in inches, are
         shown in the following table. But paper makers vary the
         size somewhat.
         [1913 Webster]
         [1913 Webster]

   Note: In the manufacture of books, etc., a sheet, of whatever
         size originally, is termed, when folded once, a folio;
         folded twice, a quarto, or 4to; three times, an octavo,
         or 8vo; four times, a sextodecimo, or 16mo; five times,
         a 32mo; three times, with an offcut folded twice and
         set in, a duodecimo, or 12mo; four times, with an
         offcut folded three times and set in, a 24mo.
         [1913 Webster]

   Note: Paper is often used adjectively or in combination,
         having commonly an obvious signification; as, paper
         cutter or paper-cutter; paper knife, paper-knife, or
         paperknife; paper maker, paper-maker, or papermaker;
         paper mill or paper-mill; paper weight, paper-weight,
         or paperweight, etc.
         [1913 Webster]

   Business paper, checks, notes, drafts, etc., given in
      payment of actual indebtedness; -- opposed to
      accommodation paper.

   Fly paper, paper covered with a sticky preparation, -- used
      for catching flies.

   Laid paper. See under Laid.

   Paper birch (Bot.), the canoe birch tree (Betula
      papyracea).

   Paper blockade, an ineffective blockade, as by a weak naval
      force.

   Paper boat (Naut.), a boat made of water-proof paper.

   Paper car wheel (Railroad), a car wheel having a steel
      tire, and a center formed of compressed paper held between
      two plate-iron disks. --Forney.

   Paper credit, credit founded upon evidences of debt, such
      as promissory notes, duebills, etc.

   Paper hanger, one who covers walls with paper hangings.

   Paper hangings, paper printed with colored figures, or
      otherwise made ornamental, prepared to be pasted against
      the walls of apartments, etc.; wall paper.

   Paper house, an audience composed of people who have come
      in on free passes. [Cant]

   Paper money, notes or bills, usually issued by government
      or by a banking corporation, promising payment of money,
      and circulated as the representative of coin.

   Paper mulberry. (Bot.) See under Mulberry.

   Paper muslin, glazed muslin, used for linings, etc.

   Paper nautilus. (Zool.) See Argonauta.

   Paper reed (Bot.), the papyrus.

   Paper sailor. (Zool.) See Argonauta.

   Paper stainer, one who colors or stamps wall paper. --De
      Colange.

   Paper wasp (Zool.), any wasp which makes a nest of
      paperlike material, as the yellow jacket.

   Paper weight, any object used as a weight to prevent loose
      papers from being displaced by wind, or otherwise.

   on paper.
      (a) in writing; as, I would like to see that on paper.
      (b) in theory, though not necessarily in paractice.
      (c) in the design state; planned, but not yet put into
          practice.

   Parchment paper. See Papyrine.

   Tissue paper, thin, gauzelike paper, such as is used to
      protect engravings in books.

   Wall paper. Same as Paper hangings, above.

   Waste paper, paper thrown aside as worthless or useless,
      except for uses of little account.

   Wove paper, a writing paper with a uniform surface, not
      ribbed or watermarked.

   paper tiger, a person or group that appears to be powerful
      and dangerous but is in fact weak and ineffectual.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Nautilus \Nau"ti*lus\, n.; pl. E. Nautiluses, L. Nautili.
   [L., fr. Gr. nayti`los a seaman, sailor, a kind of shellfish
   which was supposed to be furnished with a membrane which
   served as a sail; fr. nay^s ship. See Nave of a church.]
   1. (Zool.) The only existing genus of tetrabranchiate
      cephalopods. About four species are found living in the
      tropical Pacific, but many other species are found fossil.
      The shell is spiral, symmetrical, and chambered, or
      divided into several cavities by simple curved partitions,
      which are traversed and connected together by a continuous
      and nearly central tube or siphuncle. See
      Tetrabranchiata.
      [1913 Webster]

   Note: The head of the animal bears numerous simple tapered
         arms, or tentacles, arranged in groups, but not
         furnished with suckers. The siphon, unlike, that of
         ordinary cephalopods, is not a closed tube, and is not
         used as a locomotive organ, but merely serves to
         conduct water to and from the gill cavity, which
         contains two pairs of gills. The animal occupies only
         the outer chamber of the shell; the others are filled
         with gas. It creeps over the bottom of the sea, not
         coming to the surface to swim or sail, as was formerly
         imagined.
         [1913 Webster]

   2. The argonaut; -- also called paper nautilus. See
      Argonauta, and Paper nautilus, under Paper.
      [1913 Webster]

   3. A variety of diving bell, the lateral as well as vertical
      motions of which are controlled, by the occupants.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Argonauta \Ar`go*nau"ta\, n. (Zool.)
   A genus of Cephalopoda. The shell is called paper nautilus
   or paper sailor.
   [1913 Webster]

   Note: The animal has much resemblance to an Octopus. It has
         eight arms, two of which are expanded at the end and
         clasp the shell, but are never elevated in the air for
         sails as was formerly supposed. The creature swims
         beneath the surface by means of a jet of water, like
         other cephalopods. The male has no shell, and is much
         smaller than the female. See Hectocotylus.
         [1913 Webster]

WordNet (r) 3.0 (2006):

paper nautilus
    n 1: cephalopod mollusk of warm seas whose females have delicate
         papery spiral shells [syn: paper nautilus, nautilus,
         Argonaut, Argonauta argo]