circular saw
US /ˈsɜːr.kjə.lər ˌsɑː/
UK /ˈsɜːr.kjə.lər ˌsɑː/

1.
a power saw with a toothed disc blade that rotates to cut wood or other materials
:
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He used a circular saw to cut the large wooden planks.
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Always wear safety goggles when operating a circular saw.