Source : Webster's Revised Unabridged Dictionary (1913)

Toadflax \Toad"flax`\, n. (Bot.)
   An herb ({Linaria vulgaris}) of the Figwort family, having
   narrow leaves and showy orange and yellow flowers; -- called
   also {butter and eggs}, {flaxweed}, and {ramsted}.

Butter \But"ter\ (b[u^]t"t[~e]r), n. [OE. botere, butter, AS.
   butere, fr. L. butyrum, Gr. boy`tyron; either fr. boy`s ox,
   cow + tyro`s cheese; or, perhaps, of Scythian origin. Cf.
   {Cow}.]
   1. An oily, unctuous substance obtained from cream or milk by
      churning.

   2. Any substance resembling butter in degree of consistence,
      or other qualities, especially, in old chemistry, the
      chlorides, as butter of antimony, sesquichloride of
      antimony; also, certain concrete fat oils remaining nearly
      solid at ordinary temperatures, as butter of cacao,
      vegetable butter, shea butter.

   {Butter and eggs} (Bot.), a name given to several plants
      having flowers of two shades of yellow, as {Narcissus
      incomparabilis}, and in the United States to the toadflax
      ({Linaria vulgaris}).

   {Butter boat}, a small vessel for holding melted butter at
      table.

   {Butter flower}, the buttercup, a yellow flower.

   {Butter print}, a piece of carved wood used to mark pats of
      butter; -- called also {butter stamp}. --Locke.

   {Butter tooth}, either of the two middle incisors of the
      upper jaw.

   {Butter tree} (Bot.), a tree of the genus {Bassia}, the seeds
      of which yield a substance closely resembling butter. The
      butter tree of India is the {B. butyracea}; that of Africa
      is the Shea tree ({B. Parkii}). See {Shea tree}.

   {Butter trier}, a tool used in sampling butter.

   {Butter wife}, a woman who makes or sells butter; -- called
      also {butter woman}. [Obs. or Archaic]

Source : WordNet®

Linaria vulgaris
     n : common European perennial having showy yellow and orange
         flowers; a naturalized weed in North America [syn: {toadflax},
          {butter-and-eggs}, {wild snapdragon}, {devil's flax}]