1. 
   AVEN
   Axisymmetric Vectoring Exhaust Nozzle, a vectoring nozzle for the GE F-101 engine [US]
   Found op http://www.jedsite.info/index.html
   
   
2. 
   AVEN
   An underground vertical shaft leading upward from a cave passage or cave chamber, which often connects with other passages or shafts above and may be the underground entry point for recharge waters from a sinkhole, streamsink or swallet.
   Found op http://www.cancaver.ca/docs/glossary.htm
   
   
3. 
   Aven
   Aven (ā'ven) , in the Bible, abusive name applied to towns: to Bethel (see Beth-aven); to Heliopolis in Egypt in the Book of Ezekiel; and to some other place, traditionally Baalbek, in the Book of Amos.
   Found op http://www.infoplease.com/ce6/society/A0805451.html
   
   
4. 
   Aven
   [river] The Aven is a natural watercourse on the south coast of Brittany, France. (Atlas, 2007) Its source is near Coray. It flows in a generally southerly direction through Rosporden and Pont-Aven before discharging into the Atlantic Ocean at the seaside resort Port Manec`h, part of Névez....
   Found op http://en.wikipedia.org/wiki/Aven_(river)
   
   

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