Source : Webster's Revised Unabridged Dictionary (1913)

Clank \Clank\, v. t. [imp. & p. p. {Clanked}; p. pr. & vb. n.
   {Clanking}.]
   To cause to sound with a clank; as, the prisoners clank their
   chains.

Clank \Clank\, v. i.
   To sound with a clank.

Clank \Clank\, n. [Akin to clink, and of imitative origin; cf.
   G. klang sound, D. klank. Cf. {Clang}.]
   A sharp, brief, ringing sound, made by a collision of
   metallic or other sonorous bodies; -- usually expressing a
   duller or less resounding sound than clang, and a deeper and
   stronger sound than clink.

         But not in chains to pine, His spirit withered with
         tyeur clank.                             --Byron.

Source : WordNet®

clank
     n : a loud resonant repeating noise; "he could hear the clang of
         distant bells" [syn: {clang}, {clangor}, {clangour}, {clangoring},
          {clash}, {crash}]
     v : make a clank; "the train clanked through the village"