\Bird's" nest`\, or Bird's-nest \Bird's-nest\, n.
1. The nest in which a bird lays eggs and hatches her young.
2. (Cookery) The nest of a small swallow ({Collocalia
   nidifica} and several allied species), of China and the
   neighboring countries, which is mixed with soups.
Note: The nests are found in caverns and fissures of cliffs
      on rocky coasts, and are composed in part of alg[ae].
      They are of the size of a goose egg, and in substance
      resemble isinglass. See Illust. under {Edible}.
3. (Bot.) An orchideous plant with matted roots, of the genus
   {Neottia} ({N. nidus-avis.})
{Bird's-nest pudding}, a pudding containing apples whose
   cores have been replaced by sugar.
{Yellow bird's nest}, a plant, the {Monotropa hypopitys}.