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| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
| a chattering or flighty, light-headed person. |
The practice by which a business or investor limits risk by taking positions that tend to offset each other. For example, a business stands to lose money if the price of a commodity it holds declines, but it can offset this risk by agreeing to sell a specified amount of the commodity at a set price at some point in the future.
Note: Hedge funds, which are investment funds usually open only to the very wealthy, grew in the 1990s. The near failure of one such fund in 1998, Long-Term Capital Management, sent shock waves through Wall Street.