1.nounA cutting tool consisting of a slim, oblong block of metal with a sharp wedge or bevel formed on one end. It may be provided with a handle at the other end. It is used to remove parts of stone, wood or metal by placing the sharp edge against the material to be cut and pushing or pounding the other end with a hammer or mallet.
2.verbTo use a chisel.
3.verbTo work something with a chisel.
"She chiselled a sculpture out of the block of wood."