Carpentry .

a bit, as for a brace.

a boring tool, similar to but larger than a gimlet, consisting of a bit rotated by a transverse handle.

earth auger.

a device consisting of a shaft with a broad helical flange rotating within a cylindrical casing to force bulk materials from one end to the other.

snake ( def. 3a ) .

noun

borer , drill , gimlet , grill , tool