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brainchild
Brainerd
brainless
brainpan
brainpower
brains trust
brainstem
brainstorm
brainteaser
Braintree
brainwash
brainwork
brainy
braise
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brake (1)
brake (2)
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brainteaser
brain·teas·er [ bráyn tzər ] (plural brain·teas·ers)


noun 
Definition:
 
difficult puzzle: a difficult or complex problem that requires careful thought in order to solve it, often done for amusement ( informal )

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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