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allelo-
allelochemical
allelomorph
allelopathy
allelotoxin
alleluia
allemande
Allen
Allen key
Allen screw
Allen wrench
allene
Allentown
allergen
allergic
allergic alveolitis
allergic dermatitis
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Allen key
Al·len key (plural Al·len keys)


noun 
Definition:
 
Canada engineering 
Same as  Allen wrench
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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