The Collaborative International Dictionary of English v.0.48:

Burgoo \Bur"goo\, n. [Prov. E. burgood yeast, perh. fr. W. burym
   yeast + cawl cabbage, gruel.]
   A kind of oatmeal pudding, or thick gruel, used by seamen.
   [Written also burgout.]
   [1913 Webster]

WordNet (r) 3.0 (2006):

burgoo
    n 1: porridge made of rolled oats [syn: oatmeal, burgoo]
    2: a gathering at which burgoo stew is served
    3: thick spicy stew of whatever meat and whatever vegetables are
       available; southern United States