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caffeine
caf·feine [ ka fn, ká fn ] or caf·fein [ ka fn, ká fn ]


noun 
Definition:
 
stimulant in coffee and tea: a stimulant found in coffee, tea, and cola nuts. Use: in soft drinks, medicine, and painkillers.
[Mid-19th century. < French,< café "coffee"]
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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