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sigma
sigma hyperon
sigmoid
sigmoid colon
sigmoid flexure
sigmoidoscope
sign
sign away
sign convention
sign in
sign language
sign manual
sign of the cross
sign off
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World English Dictionary
Dictionnaire Français

signal box
sig·nal box (plural sig·nal box·es)


noun 
Definition:
 
U.K. rail 
Same as  signal tower
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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