Definition of chisel:
(n) :
a
tool consisting of a slim oblong block of metal which is flattened to a
sharp edge at one end and attached to a
handle at the other end. It is used mainly to
remove parts of
stone or
wood by placing the sharp edge against the material and
pounding the handle with a
hammer
(v) :
to use a chisel; to work something with a chisel
"she chiselled a sculpture out of the block of wood."