chisel

Short definition from Wiktionary

Noun

1. 1
   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; there are hand tool versions (the original type) and versions as bits for power tools.
2. 2
   A part of any of various tools or devices that has an analogous purpose, cutting raw material or a workpiece during the process that the tool or device performs.
3. 3
   A part of any of various tools or devices that has an analogous purpose, cutting raw material or a workpiece during the process that the tool or device performs: A part of some ploughs, next to the ploughshare, that helps cut into the soil and deal with obstructions such as rocks, roots, and stems.
4. 4
   Gravel.
5. 5
   Coarse flour; bran; the coarser part of bran or flour.

Verb

1. 1
   To use a chisel.
2. 2
   To work something with a chisel.
3. 3
   To barge in on (something); to intrude on (something).
4. 4
   To make small changes to (something), bit by bit, resulting in change over time.
5. 5
   To beg or pressure somebody into giving up (something); to haggle excessively; to cheat; to obtain something from (someone) by cheating.