Source : Webster's Revised Unabridged Dictionary (1913)

Lettuce \Let"tuce\ (l[e^]t"t[i^]s), n. [OE. letuce, prob.
   through Old French from some Late Latin derivative of L.
   lactuca lettuce, which, according to Varro, is fr. lac,
   lactis, milk, on account of the milky white juice which flows
   from it when it is cut: cf. F. laitue. Cf. {Lacteal},
   {Lactucic}.] (Bot.)
   A composite plant of the genus {Lactuca} ({L. sativa}), the
   leaves of which are used as salad. Plants of this genus yield
   a milky juice, from which lactucarium is obtained. The
   commonest wild lettuce of the United States is {L.
   Canadensis}.

   {Hare's lettuce}, {Lamb's lettuce}. See under {Hare}, and
      {Lamb}.

   {Lettuce opium}. See {Lactucarium}.

   {Sea lettuce}, certain papery green seaweeds of the genus
      {Ulva}.

Hare \Hare\, n. [AS. hara; akin to D. haas, G. hase, OHG. haso,
   Dan. [ae] Sw. hare, Icel. h?ri, Skr. ?a?a. ?.]
   1. (Zo["o]l.) A rodent of the genus {Lepus}, having long hind
      legs, a short tail, and a divided upper lip. It is a timid
      animal, moves swiftly by leaps, and is remarkable for its
      fecundity.

   Note: The species of hares are numerous. The common European
         hare is {Lepustimidus}. The northern or varying hare of
         America ({L. Americanus}), and the prairie hare ({L.
         campestris}), turn white in winter. In America, the
         various species of hares are commonly called {rabbits}.

   2. (Astron.) A small constellation situated south of and
      under the foot of Orion; Lepus.

   {Hare and hounds}, a game played by men and boys, two, called
      hares, having a few minutes' start, and scattering bits of
      paper to indicate their course, being chased by the
      others, called the hounds, through a wide circuit.

   {Hare kangaroo} (Zo["o]l.)., a small Australian kangaroo
      ({Lagorchestes Leporoides}), resembling the hare in size
      and color,

   {Hare's lettuce} (Bot.), a plant of the genus {Sonchus}, or
      sow thistle; -- so called because hares are said to eat it
      when fainting with heat. --Dr. Prior.

   {Jumping hare}. (Zo["o]l.) See under {Jumping}.

   {Little chief hare}, or {Crying hare}. (Zo["o]l.) See {Chief
      hare}.

   {Sea hare}. (Zo["o]l.) See {Aplysia}.