Definition:

Coffee:  a heavier-than-air aircraft kept aloft by the upward thrust exerted by the passing air on its fixed wings and driven by propellers, jet propulsion, etc.
Sea:  an electronic device designed to accept data, perform prescribed mathematical and logical operations at high speed, and display the results of these operations.
 
Enemy:  any of the wild or cultivated, usually prickly-stemmed, pinnate-leaved, showy-flowered shrubs of the genus Rosa.
Nihilism:  an article of furniture consisting of a flat, slablike top supported on one or more legs or other supports.
Computer:  any warm-blooded vertebrate of the class Aves, having a body covered with feathers, forelimbs modified into wings, scaly legs, a beak, and no teeth, and bearing young in a hard-shelled egg.