boll

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

• noun The seed-bearing capsule of certain plants, especially cotton and flax.

from The Century Dictionary.

• To form into or produce bolls or rounded seed-vessels.
• Same as boln.
• To increase.
• noun A round vessel for containing liquids; a bowl. See bowl, of which boll is the earlier spelling.
• noun A vesicle or bubble.
• noun A rounded pod or capsule of a plant, as of flax or cotton. See cut under cotton-plant.
• noun A round knob.
• noun An old Scotch dry measure, also used in Durham, Northumberland, Westmoreland, and the Isle of Man.

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

• intransitive verb To form a boll or seed vessel; to go to seed.
• noun The pod or capsule of a plant, as of flax or cotton; a pericarp of a globular form.
• noun A Scotch measure, formerly in use: for wheat and beans it contained four Winchester bushels; for oats, barley, and potatoes, six bushels. A boll of meal is 140 lbs. avoirdupois. Also, a measure for salt of two bushels.

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

• noun The rounded seed-bearing capsule of a cotton or flax plant.
• verb To form a boll or seed vessel; to go to seed.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun the rounded seed-bearing capsule of a cotton or flax plant