quill

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

• noun The hollow stemlike main shaft of a feather.
• noun Any of the larger wing or tail feathers of a bird.
• noun A writing pen made from the shaft of a feather.
• noun A plectrum for a stringed instrument of the clavichord type.
• noun A pipe having a hollow stem.
• noun A toothpick made from the stem of a feather.
• noun One of the sharp hollow spines of a porcupine or hedgehog.
• noun A spindle or bobbin around which yarn is wound in weaving.
• noun A hollow shaft that rotates on a solid shaft when gears are engaged.
• intransitive verb To wind (thread or yarn) onto a quill.
• intransitive verb To make or press small ridges in (fabric).
• intransitive verb To practice the art or craft of quilling.

from The Century Dictionary.

• To flute; form with small rounded ridges.
• noun In machinery, a hollow shaft: a cylinder; a pipe; specifically, in a turbine, the hollow shaft which carries the revolving blades or blade-wheels.
• To insert or adjust the quills of (a harpsichord or spiuet).
• noun The stalk of a cane or reed.
• noun A cane or reed pipe, such as those used in Pan's pipes.
• noun One of the large, strong feathers of geese, swans, turkeys, crows, etc., used for writing-pens and the like.
• noun A quill pen; hence, by extension, any pen, especially considered as the characteristic instrument of a writer.
• noun One of the comparatively large flight-feathers or remiges of any bird, without reference to the use of such feathers for making quill pens; a quill-feather: as, the quills and coverts of the wing; sometimes extended to include the similar feathers of the tail.
• noun The hard, hollow, horny part of the scape of any feather, which does not bear barbs, and by which the feather is inserted in the skin; the calamus, as distinguished from the rachis.
• noun One of the much enlarged and peculiarly modified hairs with which some animals, as porcupines, are provided; a large hollow spine.
• noun A piece of small reed or other light slender tube, used by weavers to wind thread upon, and by manufacturers to hold the wound silk and other thread prepared for sale.
• noun A plectrum of quill, as of a goose, for playing on musical instruments of the lute and zither families.
• noun In the harpsichord, spinet, and virginal, a small piece of quill projecting from the jack of each key (digital), and so set that when the key was depressed the corresponding string was twitched or twanged by it. Various other materials were used instead of quills.
• noun In seal-engraving, the hollow shaft or mandril of the seal-engravers' lathe, in which the cutting-tools are secured to be revolved while the stones are held against them.
• noun In mining, a train for igniting a blast, consisting of a quill filled with slow-burning powder: it is now superseded by the safety-fuse.
• noun The faucet of a barrel.
• noun In pharmacy, bark in a roll, such as is often formed in drying, as of cinnamon or cinchona.
• noun A fold of a plaited or fluted ruff or ruffle.
• To pluck out quills from.
• To tap, as a barrel of liquor.
• To wind thread or yarn on quills for the loom.

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

• transitive verb To plaint in small cylindrical ridges, called quillings.
• transitive verb To wind on a quill, as thread or yarn.
• noun One of the large feathers of a bird's wing, or one of the rectrices of the tail; also, the stock of such a feather.
• noun A pen for writing made by sharpening and splitting the point or nib of the stock of a feather.
• noun A spine of the hedgehog or porcupine.
• noun The pen of a squid. See Pen.
• noun The plectrum with which musicians strike the strings of certain instruments.
• noun The tube of a musical instrument.
• noun Something having the form of a quill.
• noun The fold or plain of a ruff.
• noun (Weaving) A spindle, or spool, as of reed or wood, upon which the thread for the woof is wound in a shuttle.
• noun (Mach.) A hollow spindle.
• noun (Pharm.) A roll of dried bark.
• noun a bit for boring resembling the half of a reed split lengthways and having its end sharpened like a gouge.