Source : Webster's Revised Unabridged Dictionary (1913)

Sprat \Sprat\, n. [OE. sprot, sprotte, D. sprot; akin to G.
   sprotte.] (Zo["o]l.)
   (a) A small European herring ({Clupea sprattus}) closely
       allied to the common herring and the pilchard; -- called
       also {garvie}. The name is also applied to small herring
       of different kinds.
   (b) A California surf-fish ({Rhacochilus toxotes}); -- called
       also {alfione}, and {perch}.

   {Sprat borer} (Zo["o]l.), the red-throated diver; -- so
      called from its fondness for sprats. See {Diver}.

   {Sprat loon}. (Zo["o]l.)
   (a) The young of the great northern diver. [Prov. Eng.]
   (b) The red-throated diver. See {Diver}.

   {Sprat mew} (Zo["o]l.), the kittiwake gull.

Source : WordNet®

Clupea sprattus
     n : small herring processed like a sardine [syn: {brisling}, {sprat}]