Broacher

Machinery. an elongated, tapered, serrated cutting tool for shaping and enlarging holes.
a spit for roasting meat.
a gimlet for tapping casks.
(in a lock) a pin receiving the barrel of a key.
Also, broach spire. Architecture. an octagonal spire rising directly from a tower without any intervening feature.
Masonry. a pointed tool for the rough dressing of stone.
brooch.
to enlarge and finish with a broach.
to mention or suggest for the first time:
to broach a subject.
to draw (beer, liquor, etc.), as by tapping:
to broach beer from a keg.
to tap or pierce.
Masonry. to shape or dress (a block of stone).
Nautical. (of a sailing vessel) to veer to windward.
to break the surface of water; rise from the sea, as a fish or a submarine.
Historical Examples

Sermons on Evil-Speaking Isaac Barrow

verb
(transitive) to initiate (a topic) for discussion: to broach a dangerous subject
(transitive) to tap or pierce (a container) to draw off (a liquid): to broach a cask, to broach wine
(transitive) to open in order to begin to use: to broach a shipment
(intransitive) to break the surface of the water: the trout broached after being hooked
(transitive) (machinery) to enlarge and finish (a hole) by reaming
noun
a long tapered toothed cutting tool for enlarging holes
a spit for roasting meat, etc
a roof covering the corner triangle on the top of a square tower having an octagonal spire
a pin, forming part of some types of lock, that registers in the hollow bore of a key
a tool used for tapping casks
a less common spelling of brooch
verb
(nautical) (usually foll by to) to cause (a sailing vessel) to swerve sharply and dangerously or (of a sailing vessel) to swerve sharply and dangerously in a following sea, so as to be broadside to the waves
n.
v.