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call on
call option
call out
call premium
call price
call protection
call provision
call risk
call sign
call slip
call to quarters
call up
call-up
call upon
call waiting
calla
calla lily
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call sign
call sign (plural call signs)


noun 
Definition:
 
radio station's identifying signal: a signal used for identification by a radio transmitting station or a unit or operator in radio communication with others
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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