The Collaborative International Dictionary of English v.0.48:

Graves \Graves\, n. pl.
   The sediment of melted tallow. Same as Greaves.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Greaves \Greaves\ (gr[=e]vz), n. pl. [Cf. dial. Sw. grevar
   greaves, LG. greven, G. griebe, also AS. greofa pot. Cf.
   Gravy.]
   The sediment of melted tallow. It is made into cakes for
   dogs' food. In Scotland it is called cracklings. [Written
   also graves.]
   [1913 Webster]

WordNet (r) 3.0 (2006):

Graves
    n 1: English writer known for his interest in mythology and in
         the classics (1895-1985) [syn: Graves, Robert Graves,
         Robert Ranke Graves]