Adze

n. sharp tool used to roughly cut and shape wood

The tool known as the adze (pronounced ădz) serves for smoothing rough-cut wood in hand woodworking. Generally, the user stands astride a board or log and swings the adze downwards towards their feet, clipping, chipping, and or cutting off a piece of wood, and walking backwards as they go, leaving a relatively smooth surface behind. However, in general usage, the adze can be used for other cutting operations, such as tree cutting.
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Noun
1. an edge tool used to cut and shape wood
(synonym) adz
(hypernym) edge tool

(n.)
A carpenter's or cooper's tool, formed with a thin arching blade set at right angles to the handle. It is used for chipping or slicing away the surface of wood.
  

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Wielding the adze before Ban's door.
Displaying one's inferior skills in front of a great master. Teaching one's grandmother how to suck eggs.