broach

from The American Heritage® Dictionary of the English Language, 5th Edition.

• intransitive & transitive verb To veer or cause to veer broadside to the wind and waves.
• transitive verb To bring up (a subject) for discussion or debate.
• transitive verb To announce.
• transitive verb To pierce in order to draw off liquid.
• transitive verb To draw off (a liquid) by piercing a hole in a cask or other container.
• transitive verb To shape or enlarge (a hole) with a tapered, serrated tool.
• noun A tapered, serrated tool used to shape or enlarge a hole.
• noun The hole made by such a tool.
• noun A spit for roasting meat.
• noun A mason's narrow chisel.
• noun A gimlet for tapping or broaching casks.

from The Century Dictionary.

• noun An occasional name for the hurdy-gurdy (which see).
• noun In quarrying, a tool used in a machine-drill to break down the walls between a row of boreholes in order to form a continuous channel. Also called broaching-bit.
• noun A short-stapled cotton grown in the Broach district of the Bombay Presidency, British India.
• To spit; pierce as with a spit.
• To spur.
• In masonry, to rough-hew.
• To open for the first time for the purpose of taking out something; more especially, to tap or pierce, as a cask in order to draw the liquor: as, to broach a hogshead.
• Hence, figuratively To open, as the mouth for utterance.
• To let out; shed.
• To state or give expression to for the first time; utter; give out; especially, begin conversation or discussion about; introduce by way of topic: as, to broach a theory or an opinion.
• To give a start to; set going.
• noun A spit.
• noun A spear.
• noun An awl; a bodkin.
• noun A spike; a skewer; a sharp stick; specifically, a rod of sallow, hazel, or other tough and pliant wood, sharpened at each end and bent in the middle, used by thatchers to pierce and fix their work.
• noun A spur.
• noun A fish-hook.
• noun A spike or standard for a candle.
• noun A taper; a torch.
• noun A spindle; a spool.
• noun In architecture, formerly, a spire of any kind; now, specifically, as used in some parts of England and by some writers on architecture, a spire which rises directly from the walls of its tower, without parapets and gutters.
• noun A narrow - pointed chisel used by masons for hewing stones.
• noun Any tapered boring-bit or drill.
• noun A straight steel tool with file-teeth for pressing through irregular holes in metal that cannot be dressed by revolving tools.
• noun That part of the stem of a key which projects beyond the bit or web, and enters a socket in the interior of the lock.
• noun That pin in a lock which enters the barrel of the key.
• noun The stick from which candle-wicks are suspended for dipping.
• noun A gimlet used in opening casks for sampling their contents.
• noun A fitting for an Argand gas-burner.
• noun A start, like the end of a spit, on the head of a young stag.
• noun A pin or clasp to fasten a garment; specifically, an ornamental pin, clasp, or buckle, and especially a breast-pin, of gold, silver, or other metal, attached to the dress or depending from the neck: in this sense now usually spelled brooch (which see).

from the GNU version of the Collaborative International Dictionary of English.

• noun obsolete A spit.
• noun Prov. Eng. An awl; a bodkin; also, a wooden rod or pin, sharpened at each end, used by thatchers.
• noun A tool of steel, generally tapering, and of a polygonal form, with from four to eight cutting edges, for smoothing or enlarging holes in metal; sometimes made smooth or without edges, as for burnishing pivot holes in watches; a reamer. The broach for gun barrels is commonly square and without taper.
• noun A straight tool with file teeth, made of steel, to be pressed through irregular holes in metal that cannot be dressed by revolving tools; a drift.