drawback

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

• noun A disadvantage or inconvenience. synonym: disadvantage.
• noun A refund or remittance, such as a discount on duties or taxes for goods destined for reexport.

from The Century Dictionary.

• noun Any loss of advantage or impairment of profit, value, success, or satisfaction; a discouragement or hindrance; a disadvantage.
• noun Money or an amount paid back; usually, a certain amount of duties or customs dues paid back or remitted to an importer when he exports goods that he has previously imported and paid duty on, as, for instance, tobacco, or a certain amount of excise paid back or allowed on the exportation of home manufactures. Abbreviated dbk.
• noun In iron-founding, a loose piece in a mold. In brass-founding such a piece is called a false core.

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

• noun A loss of advantage, or deduction from profit, value, success, etc.; a discouragement or hindrance; objectionable feature.
• noun (Com.) Money paid back or remitted; especially, a certain amount of duties or customs, sometimes the whole, and sometimes only a part, remitted or paid back by the government, on the exportation of the commodities on which they were levied.

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

• noun A disadvantage; something that detracts or takes away.
• noun A partial refund of an import fee, as when goods are re-exported from the country that collected the fee.

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

• noun the quality of being a hindrance
• verb pull back or move away or backward
• verb use a surgical instrument to hold open (the edges of a wound or an organ)