JMD-Jamaican Dollar. Jamaica, Dollar. The Jamaican Dollar is the currency of Jamaica. Our currency rankings show that the most popular Jamaica Dollar exchange rate is the USD to JMD rate. The currency code for Dollars is JMD, and the currency symbol is J$.
Full Definition of JETSAM. 1. : the part of a ship, its equipment, or its cargo that is cast overboard to lighten the load in time of distress and that sinks or is washed ashore.
JDAM Bomb. The Joint Direct Attack Munition (JDAM) is a guidance kit that converts unguided bombs, or dumb bombs into all-weather smart munitions. JDAM-equipped bombs are guided by an integrated inertial guidance system coupled to a Global Positioning System (GPS) receiver, giving them a published range of up to 15 nautical miles (28 KM).