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WordNet-Online 
 
Adjective back-channel has 1 sense 
Noun back-channel has 1 sense 
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| bacillus anthracis bacillus globigii bacillus subtilis bacitracin back-and-forth back-biting back-blast back-breaking back-channel back-comb back-end back-flip back-formation back-geared back-link back-links back-number 
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