core bit
- noun
- Specialized
:
broca de núcleo
- The contractor used a core bit to collect samples from the concrete walls.
Examples
-
To investigate the soil layers, they employed a core bit during the drilling process.
-
Screaming of metal as the hollow-core bit tears through steel.
Fiction book (1995) -
He replaced the worn core bit to improve the efficiency of the drilling project.
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
How Large
- Specialized
- Specialized
1
7.3
- Specialized
11
3.7
- Specialized
Surface Forms
Morphology
The meaning 'a drill bit used to extract a cylindrical core sample' is directly and transparently derived from combining 'core' (a cylindrical sample) with 'bit' (the cutting part of a drill). This noun–noun composition (the bit for cores) follows a straightforward compositional pattern common across languages, so a B1 learner who knows both constituents will readily infer the MWE meaning.
Etymology
Core bit is a hollow tube with sharp teeth that cuts a round plug out of rock or concrete. The plug is the core and the bit is the cutting part, so core bit means the tool used to take that 'core' sample.