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power factor
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power block
pow·er block (plural pow·er blocks)


noun 
Definition:
 
driving of opponent backward: in football, an offensive block in which a lineman tries to drive a defensive lineman backward or parallel to the line of scrimmage
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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