Look up: gills

1. 
   Gills
   Gills are a respiratory organ found in animals which obtain oxygen from water, such as crustaceans, molluscs, fish and amphibians.
   Found on http://www.encyclo.co.uk/nol.php
   
   
2. 
   gills
   The breathing organs of fish, which are removed during processing since they decompose rapidly and may contaminate the fish.
   Found on http://www.fmi.org/facts_figs/glossary_s
   
   
3. 
   gills
   a set of movable flaps at the rear of a cowling to control the flow of cooling air Category: Transport
   Found on http://www.mijnwoordenboek.nl/definition
   
   
4. 
   gills
   gills, external respiratory organs of most aquatic animals. In fishes the gills are located in gill chambers at the rear of the mouth (pharynx). Water is taken in through the mouth, is forced through openings called gill slits, and then passes through the gill clefts, spaces between the ranks of del...
   Found on http://www.infoplease.com/ce6/sci/A08208