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blue gum
blue heaven
blue heeler
blue helmet
blue jay
blue jeans
blue john
blue law
blue line
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blue line
blue line (plural blue lines)


noun 
Definition:
 
boundary in ice hockey: either of two blue lines that divide a hockey rink into the defensive, neutral, and offensive zones
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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