Pronunciation: ( jet'u-sun, -zun),[key] —v.t. 1. to cast (goods) overboard in order to lighten a vessel or aircraft or to improve its stability in an emergency.
2. to throw off (something) as an obstacle or burden; discard.
3. Cards.to discard (an unwanted card or cards).
—n. 1. the act of casting goods from a vessel or aircraft to lighten or stabilize it.