A type of stock market order you can make with a broker to buy or sell a stock if it's market price reaches a specified threshold. Distinguished from market order.

For instance, if RHAT is currently trading at 85, I might put in a limit order to sell all my RHAT if its market price reaches 100.

There is usually a time limit on these orders so that if the threshold is not reached within a certain time, the order expires. (Brokers tend to have a maximum time limit, so that unrealistic orders are eventually flushed out of the system.)

WTF was this a nodeshell?