Source : Webster's Revised Unabridged Dictionary (1913)

Chunk \Chunk\, n. [Cf. {Chump}.]
   A short, thick piece of anything. [Colloq. U. S. & Prov.
   Eng.]

Source : WordNet®

chunk
     n : a compact mass; "a ball of mud caught him on the shoulder"
         [syn: {ball}, {clod}, {glob}, {lump}, {clump}]
     v 1: put together indiscriminately; "lump together all the
          applicants" [syn: {lump}]
     2: group or chunk together in a certain order or place side by
        side [syn: {collocate}, {lump}]