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ballbuster
ballerina
ballet
ballet flats
ballet shoe
balletic
balletomane
ballicatter
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ball valve
ball valve (plural ball valves)


noun 
Definition:
 
valve opened and closed by ball: a valve in which a ball moves in and out of a spherical socket in response to changes in fluid or mechanical pressure
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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