(informal) To fall apart.

(idiomatic) Exactly, to its full degree

(physics) A normalized linear combination of an "up" state and a "down" state for, say, the spin of an electron.

A bit designed to prevent a horse from lifting the head when rearing.

plural of rearing bit

A boring bit shaped like a gouge.

A bit whose channel is straight instead of twisted.

A bit for boring, resembling half of a reed split lengthways and having its end sharpened like a gouge.

plural of quill bit

pod auger