The Collaborative International Dictionary of English v.0.48:

Lily \Lil"y\ (l[i^]l"[y^]), n.; pl. Lilies (l[i^]l"[i^]z).
   [AS. lilie, L. lilium, Gr. lei`rion. Cf. Flower-de-luce.]
   1. (Bot.) A plant and flower of the genus Lilium,
      endogenous bulbous plants, having a regular perianth of
      six colored pieces, six stamens, and a superior
      three-celled ovary.
      [1913 Webster]

   Note: There are nearly fifty species, all found in the North
         Temperate zone. Lilium candidum and Lilium
         longiflorum are the common white lilies of gardens;
         Lilium Philadelphicum is the wild red lily of the
         Atlantic States. Lilium Chalcedonicum is supposed to
         be the "lily of the field" in our Lord's parable;
         Lilium auratum is the great gold-banded lily of
         Japan.
         [1913 Webster]

   2. (Bot.) A name given to handsome flowering plants of
      several genera, having some resemblance in color or form
      to a true lily, as Pancratium, Crinum, Amaryllis,
      Nerine, etc.
      [1913 Webster]

   3. That end of a compass needle which should point to the
      north; -- so called as often ornamented with the figure of
      a lily or fleur-de-lis.
      [1913 Webster]

            But sailing further, it veers its lily to the west.
                                                  --Sir T.
                                                  Browne.
      [1913 Webster]

   4. (Auction Bridge) A royal spade; -- usually in pl. See
      Royal spade, below.
      [Webster 1913 Suppl.]

   African lily (Bot.), the blue-flowered Agapanthus
      umbellatus.

   Atamasco lily (Bot.), a plant of the genus Zephyranthes
      (Zephyranthes Atamasco), having a white and pink
      funnelform perianth, with six petal-like divisions
      resembling those of a lily. --Gray.

   Blackberry lily (Bot.), the Pardanthus Chinensis, the
      black seeds of which form a dense mass like a blackberry.


   Bourbon lily (Bot.), Lilium candidum. See Illust.

   Butterfly lily. (Bot.) Same as Mariposa lily, in the
      Vocabulary.

   Lily beetle (Zool.), a European beetle (Crioceris
      merdigera) which feeds upon the white lily.

   Lily daffodil (Bot.), a plant of the genus Narcissus, and
      its flower.

   Lily encrinite (Paleon.), a fossil encrinite, esp.
      Encrinus liliiformis. See Encrinite.

   Lily hyacinth (Bot.), a plant of the genus Hyacinthus.

   Lily iron, a kind of harpoon with a detachable head of
      peculiar shape, used in capturing swordfish.

   Lily of the valley (Bot.), a low perennial herb
      (Convallaria majalis), having a raceme of nodding,
      fragrant, white flowers.

   Lily pad, the large floating leaf of the water lily. [U.
      S.] --Lowell.

   Tiger lily (Bot.), Lilium tigrinum, the sepals of which
      are blotched with black.

   Turk's-cap lily (Bot.) Lilium Martagon, a red lily with
      recurved sepals; also, the similar American lily, Lilium
      superbum.

   Water lily (Bot.), the Nymph[ae]a, a plant with floating
      roundish leaves, and large flowers having many petals,
      usually white, but sometimes pink, red, blue, or yellow.
      [See Illust. of Nymph[ae]a.]
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Tiger \Ti"ger\, n. [OE. tigre, F. tigre, L. tigris, Gr. ti`gris;
   probably of Persian origin; cf. Zend tighra pointed, tighri
   an arrow, Per. t[imac]r; perhaps akin to E. stick, v. t.; --
   probably so named from its quickness.]
   1. A very large and powerful carnivore (Felis tigris)
      native of Southern Asia and the East Indies. Its back and
      sides are tawny or rufous yellow, transversely striped
      with black, the tail is ringed with black, the throat and
      belly are nearly white. When full grown, it equals or
      exceeds the lion in size and strength. Called also royal
      tiger, and Bengal tiger.
      [1913 Webster]

   2. Fig.: A ferocious, bloodthirsty person.
      [1913 Webster]

            As for heinous tiger, Tamora.         --Shak.
      [1913 Webster]

   3. A servant in livery, who rides with his master or
      mistress. --Dickens.
      [1913 Webster]

   4. A kind of growl or screech, after cheering; as, three
      cheers and a tiger. [Colloq. U. S.]
      [1913 Webster]

   5. A pneumatic box or pan used in refining sugar.
      [1913 Webster]

   American tiger. (Zool.)
      (a) The puma.
      (b) The jaguar.

   Clouded tiger (Zool.), a handsome striped and spotted
      carnivore (Felis macrocelis or Felis marmorata) native
      of the East Indies and Southern Asia. Its body is about
      three and a half feet long, and its tail about three feet
      long. Its ground color is brownish gray, and the dark
      markings are irregular stripes, spots, and rings, but
      there are always two dark bands on the face, one extending
      back from the eye, and one from the angle of the mouth.
      Called also tortoise-shell tiger.

   Mexican tiger (Zool.), the jaguar.

   Tiger beetle (Zool.), any one of numerous species of active
      carnivorous beetles of the family Cicindelidae. They
      usually inhabit dry or sandy places, and fly rapidly.

   Tiger bittern. (Zool.) See Sun bittern, under Sun.

   Tiger cat (Zool.), any one of several species of wild cats
      of moderate size with dark transverse bars or stripes
      somewhat resembling those of the tiger.

   Tiger flower (Bot.), an iridaceous plant of the genus
      Tigridia (as Tigridia conchiflora, Tigridia
      grandiflora, etc.) having showy flowers, spotted or
      streaked somewhat like the skin of a tiger.

   Tiger grass (Bot.), a low East Indian fan palm (Chamaerops
      Ritchieana). It is used in many ways by the natives. --J.
      Smith (Dict. Econ. Plants).

   Tiger lily. (Bot.) See under Lily.

   Tiger moth (Zool.), any one of numerous species of moths of
      the family Arctiadae which are striped or barred with
      black and white or with other conspicuous colors. The
      larvae are called woolly bears.

   Tiger shark (Zool.), a voracious shark (Galeocerdo
      tigrinus syn. Galeocerdo maculatus) more or less barred
      or spotted with yellow. It is found in both the Atlantic
      and Indian Ocean. Called also zebra shark.

   Tiger shell (Zool.), a large and conspicuously spotted
      cowrie (Cypraea tigris); -- so called from its fancied
      resemblance to a tiger in color and markings. Called also
      tiger cowrie.

   Tiger snake (Zool.), either of two very venomous snakes of
      Tasmania and Australia, Notechis scutatis and Notechis
      ater, which grow up to 5 feet in length.

   Tiger wolf (Zool.), the spotted hyena (Hyaena crocuta).


   Tiger wood, the variegated heartwood of a tree (Machaerium
      Schomburgkii) found in Guiana.
      [1913 Webster]

WordNet (r) 3.0 (2006):

tiger lily
    n 1: east Asian perennial having large reddish-orange black-
         spotted flowers with reflexed petals [syn: tiger lily,
         devil lily, kentan, Lilium lancifolium]
    2: lily of southeastern United States having cup-shaped flowers
       with deep yellow to scarlet recurved petals [syn: tiger
       lily, leopard lily, pine lily, Lilium catesbaei]