1. 
   Aircraft
   There are plenty of sunken aircraft underwater, many of them from World War Two. Some are just fragments, but others are intact. This area is researched by Steven Carmichael-Timson and Adam Wilson at Sea-Tech Exploration, UK.
   Found op http://www.abc.se/~pa/uwa/glossary.htm
   
   
2. 
   aircraft
   [n] - a vehicle that can fly
   Found op http://www.webdictionary.co.uk/definition.php?query=aircraft
   
   
3. 
   Aircraft
   Any structure, machine, or contrivance, especially a vehicle, designed to be supported by the air, being borne up either by the dynamic action of the air upon the surfaces of the structure or object, or by its own buoyancy; such structures, machines, or vehicles collectively.Aircraft, in its broades...
   Found op http://www.diracdelta.co.uk/science/source/a/i/aircraft/source.html
   
   
4. 
   Aircraft
   A generic term for all types of flying machines, both heavier-than-air and lighter-than-air. The term 'aircraft' includes aeroplanes, gyroplanes, helicopters, ornithopters, kites, gliders, airships an balloons.
   Found op http://www.aeroplanemonthly.com/glossary/
   
   
5. 
   Aircraft
   Air'craft` noun sing. & plural Any device, as a balloon, aëroplane, etc., for floating in, or flying through, the air.
   Found op http://www.encyclo.co.uk/webster/A/48
   
   
6. 
   aircraft
   A weight-carrying structure for navigation of the air that is supported either by its own buoyancy or by the dynamic action of the air against its surfaces. ... (12 Dec 1998) ...
   Found op http://www.mondofacto.com/facts/dictionary?aircraft
   
   
7. 
   aircraft
   noun a vehicle that can fly
   Found op http://wordnetweb.princeton.edu/perl/webwn?s=aircraft
   
   
8. 
   Aircraft
   • (n. sing. & pl.) Any device, as a balloon, aeroplane, etc., for floating in, or flying through, the air.
   Found op http://thinkexist.com/dictionary/meaning/aircraft/
   
   
9. 
   aircraft
   (from the article `airplane`) any of a class of fixed-wing aircraft that is heavier than air, propelled by a screw propeller or a high-velocity jet, and supported by the dynamic ... ...layer behind the obstacle can be much reduced. Other methods of reducing drag that have some practical applications...
   Found op http://www.britannica.com/eb/a-z/a/34
   
   
10. 
    Aircraft
    An aircraft is a vehicle that is able to fly by gaining support from the air, or, in general, the atmosphere of a planet. It counters the force of gravity by using either static lift or by using the dynamic lift of an airfoil, or in a few cases the downward thrust from jet engines. Although rockets...
    Found op http://en.wikipedia.org/wiki/Aircraft
    
    
11. 
    Aircraft
    An aircraft is a flying machine, a vessel which flies through the air rather than floats on water or travels along a road or rail.
    Found op http://www.probertencyclopaedia.com/browse/IA.HTM
    
    
12. 
    aircraft
    Any aeronautical vehicle capable of flying through the air. It may be lighter than air (supported by buoyancy) or heavier than air (supported by the dynamic action of air on its surfaces). Balloons and airships are lighter-than-air craft. Heavier-than-air craft include the aeroplane, glider, autogir...
    Found op http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0000062.html
    
    
13. 
    aircraft
    1) A flying machine 2) Craft
    Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/aircraft/1
    
    

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