BACK CHANNELback channel · English · Reference checkedReferenceOpen English WordNet 2024oewn2024:lemma:BACK CHANNELTier 1Ordinal74Pythagorean38Classical70Reverse223Reverse Reduction61Standard260Final Large740Ordinal80Reduced26Atbash432Isopsephy779Ordinal95Abjad200