Source : Webster's Revised Unabridged Dictionary (1913)

Broth \Broth\, n. [AS. bro?; akin to OHG. brod, brot; cf. Ir.
   broth, Gael. brot. [root]93. Cf. {Brewis}, {Brew}.]
   Liquid in which flesh (and sometimes other substances, as
   barley or rice) has been boiled; thin or simple soup.

         I am sure by your unprejudiced discourses that you love
         broth better than soup.                  --Addison.

Source : WordNet®

broth
     n 1: liquid in which meat and vegetables are simmered; used as a
          basis for e.g. soups or sauces; "she made gravy with a
          base of beef stock" [syn: {stock}]
     2: a thin soup of meat or fish or vegetable stock