share

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

• noun A part or portion belonging to, distributed to, contributed by, or owed by a person or group.
• noun An equitable portion.
• noun One of the equal parts into which the capital stock of a company is divided.
• noun A unit of ownership in a mutual fund or other investment vehicle.
• noun Chiefly British Stocks.
• intransitive verb To accord a share in (something) to another or others.
• intransitive verb To divide and parcel out in shares; apportion.
• intransitive verb To participate in, use, enjoy, or experience jointly or in turns.
• intransitive verb To hold or have jointly with another or others.
• intransitive verb To relate (a secret or experience, for example) to another or others.
• intransitive verb Computers To make (a digital file) accessible to other users on a network, as for copying and downloading.
• intransitive verb To have a share or part.
• intransitive verb To allow someone to use or enjoy something that one possesses.
• intransitive verb To use or enjoy something jointly or in turns.
• intransitive verb To talk about personal experiences or feelings with others.
• idiom (go shares) To be concerned or partake equally or jointly, as in a business venture.
• noun A plowshare.

from The Century Dictionary.

• noun The broad iron or blade of a plow which cuts the bottom of the furrowslice; a plowshare. See cut under plow.
• noun The blade in a seeding-machine or drill which makes a furrow for the seed.
• To divide in portions; apportion among two or more.
• To partake, suffer, bear, or enjoy with others; seize and possess jointly or in common.
• To receive as one's portion; enjoy or suffer; experience.
• Synonyms Participate, etc. See partake.
• To have part; get one's portion; be a sharer; partake.
• noun The pubis; the pubic bone; the share-bone; the private parts.
• noun A piece cut off; a part cut out; a cut; a slice.
• noun A part or portion.
• noun A part or definite portion of a thing owned by a number in common; that part of an undivided interest which belongs to any one of the proprietors; specifically, one of the whole number of equal parts into which the capital stock of a trading company or corporation is or may be divided; as, shares in a bank; shares in a railway; a ship owned in ten shares. See stock
• noun An allotted part; the part that falls to, or belongs naturally or of right to, one in any division or distribution among a number; apportioned lot; as, to have more than a fair share of work, responsibility, or blame; to claim a share in the profits.
• noun Synonyms Portion, Division, etc. See part.—3 and 4. Interest, allotment, apportionment, quota.
• noun In primitive plows the share is the point or blade of iron or wood which stirs the soil. In modern turning-plows it is the entering member or segment, cutting the bottom of the furrow and is made of steel. In single-moldboard plows the share presents on one side a vertical surface with a horizontal base line, broadening by an excurved line, in the rear joining the land-side, with which it is in the same plane (see bar share, slip share, below); on the other side an oblique sloping surface extended on the outside into the ‘wing’ or ‘heel,’ on its upward and backward edges closely matching the mold-board.
• To cut; shear; cleave.

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

• noun The part (usually an iron or steel plate) of a plow which cuts the ground at the bottom of a furrow; a plowshare.
• noun The part which opens the ground for the reception of the seed, in a machine for sowing seed.
• intransitive verb To have part; to receive a portion; to partake, enjoy, or suffer with others.
• noun A certain quantity; a portion; a part; a division.
• noun Especially, the part allotted or belonging to one, of any property or interest owned by a number; a portion among others; an apportioned lot; an allotment; a dividend.
• noun Hence, one of a certain number of equal portions into which any property or invested capital is divided.
• noun obsolete The pubes; the sharebone.
• noun to partake; to be equally concerned.
• noun in equal shares.
• transitive verb To part among two or more; to distribute in portions; to divide.
• transitive verb To partake of, use, or experience, with others; to have a portion of; to take and possess in common.
• transitive verb obsolete To cut; to shear; to cleave; to divide.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun agriculture The cutting blade of an agricultural machine like a plough, a cultivator or a seeding-machine.
• noun A portion of something, especially a portion given or allotted to someone.
• noun finance A financial instrument that shows that one owns a part of a company that provides the benefit of limited liability.