The Collaborative International Dictionary of English v.0.48:

Doggerel \Dog"ger*el\, a. [OE. dogerel.]
   Low in style, and irregular in measure; as, doggerel rhymes.
   [1913 Webster]

         This may well be rhyme doggerel, quod he. -- Chaucer.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Doggerel \Dog"ger*el\, n.
   A sort of loose or irregular verse; mean or undignified
   poetry.
   [1913 Webster]

         Doggerel like that of Hudibras.          -- Addison.
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         The ill-spelt lines of doggerel in which he expressed
         his reverence for the brave sufferers.   --Macaulay.
   [1913 Webster]

WordNet (r) 3.0 (2006):

doggerel
    n 1: a comic verse of irregular measure; "he had heard some
         silly doggerel that kept running through his mind" [syn:
         doggerel, doggerel verse, jingle]