Source : Webster's Revised Unabridged Dictionary (1913)

Haslet \Has"let\, n. [F. h[^a]telettes broil, for hastelettes,
   fr. F. haste spit; cf. L. hasta spear, and also OHG. harst
   gridiron.]
   The edible viscera, as the heart, liver, etc., of a beast,
   esp. of a hog. [Written also {harslet}.]

Source : WordNet®

haslet
     n : heart and liver and other edible viscera especially of hogs;
         usually chopped and formed into a loaf and braised