fishtail bit
- noun
- Specialized
:
broca fishtail
- The fishtail bit is ideal for soft to medium formations when drilling for water wells.
Examples
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Replace the worn fishtail bit before starting to bore the new hole.
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Engineers selected a fishtail bit because of its ability to cut efficiently through clay and shale.
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The contractor used a fishtail bit for the drilling project.
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A fishtail bit is essential for drilling through tough rock.
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Engineers selected a fishtail bit because of its ability to cut efficiently through clay and shale.
-
The fishtail bit is ideal for soft to medium formations when drilling for water wells.
-
A fishtail bit is essential for drilling through tough rock.
Synonyms
40
6.5
The cutting part of a drill that makes holes
11
3.7
A metal tool that makes holes in hard materials like rock or wood when attached to a drill
1
4.9
A small cutting tool with spiral grooves that makes holes in wood or metal
A drill part with hard cutting edges that makes holes in wood or metal
A tool fixed to a machine that cuts rock and earth to make a hole for oil
A tool for a drill that cuts into rock or other hard material
A drill tool with cutting edges in the shape of a cross for drilling hard rock
A drill part with hard turning wheels that cut through rock
Surface Forms
Morphology
The compound is compositionally transparent: a B1 learner who knows 'fishtail' (a shape narrowing like a tail) and 'bit' (the cutting part of a drill) can readily infer this is a drill bit shaped like a fishtail used for boring. Although it's a technical term, the meaning follows directly from the constituents and common naming-by-shape patterns across languages.
Etymology
Fishtail bit is named for its shape: the tip spreads out like a fish's tail, with two thin fins that split and push away soft rock or soil. So the picture of a 'fish tail' helps you remember this tool is a simple drill used to 'drill' holes in soft to medium ground.