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burley
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burn (1)
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burning glass
burn·ing glass (plural burn·ing glass·es)


noun 
Definition:
 
lens to produce heat: a convex lens that can concentrate the sun's rays to produce an intense spot of heat or fire at the focus
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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