Answer: ax

AnswerCrossword Clue
axmusical instrument (as a guitar or a saxophone)
axto have a personal or selfish motive
axchopping tool with a heavy blade
axa cutting tool that consists of a heavy edged head fixed to a handle with the edge parallel to the handle and that is used especially for felling trees and chopping and splitting wood
axto chop with a cutting tool
axhammer with a sharp edge for dressing or spalling stone