A cutting tool used to remove parts of stone, wood or metal by pushing or pounding the back when the sharp edge is against the material. It consists of a slim, oblong block of metal with a sharp wedge or bevel formed on one end and sometimes a handle at the other end.

Gravel.

(usually in the plural) Coarse flour; bran; the coarser part of bran or flour.

(intransitive) To use a chisel.

(transitive) To work something with a chisel.

(transitive, intransitive, informal) To cheat, to get something from (someone) by cheating.