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Opelousas
open
open account
open admissions
open adoption
open-air
open-and-shut
open bar
open book
open-cast
open chain
open circuit
open classroom
open cluster
open contract
open court
open cut
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World English Dictionary
Dictionnaire Français

open book
o·pen book


noun 
Definition:
 
something or somebody easily comprehensible: somebody or something that is very easy to understand or about which everything is known
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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