Source : Webster's Revised Unabridged Dictionary (1913)

Kelp \Kelp\, n. [Formerly kilpe; of unknown origin.]
   1. The calcined ashes of seaweed, -- formerly much used in
      the manufacture of glass, now used in the manufacture of
      iodine.

   2. (Bot.) Any large blackish seaweed.

   Note: {Laminaria} is the common kelp of Great Britain;
         {Macrocystis pyrifera} and {Nereocystis Lutkeana} are
         the great kelps of the Pacific Ocean.

   {Kelp crab} (Zo["o]l.), a California spider crab ({Epialtus
      productus}), found among seaweeds, which it resembles in
      color.

   {Kelp salmon} (Zo["o]l.), a serranoid food fish ({Serranus
      clathratus}) of California. See {Cabrilla}.

Nereocystis \Ne`re*o*cys"tis\, n. [NL. See {Nereid}, and
   {Cyst}.] (Bot.)
   A genus of gigantic seaweeds.

   Note: {Nereocystis Lutkeana}, of the North Pacific, has a
         stem many fathoms long, terminating in a great vesicle,
         which is crowned with a tuft of long leaves. The stem
         is used by the Alaskans for fishing lines.

Sea otter \Sea" ot"ter\ (Zo["o]l.)
   An aquatic carnivore ({Enhydris lutris, or marina}) found in
   the North Pacific Ocean. Its fur is highly valued, especially
   by the Chinese. It is allied to the common otter, but is
   larger, with feet more decidedly webbed.

   {Sea-otter's cabbage} (Bot.), a gigantic kelp of the Pacific
      Ocean ({Nereocystis Lutkeana}). See {Nereocystis}.