big voice n. a public address and siren system used for warnings (of incoming artillery fire, missiles, tornados, etc.) over a large (outdoor) area. Editorial Note: This is often used as a proper noun and without an article: Big Voice. A more common synonym is giant voice. (source: Double-Tongued Dictionary)
Further reading
Unparalleled misalignments are pairs of phrases in which the words in one phrase are each synonyms of the words in the other, but the phrases themselves mean different things. For example, the phrase blanket statement can be paired with cover story...
Here’s an unparalleled misalignment in which the words in one pair are synonyms of the words in the other pair: organic chemistry and carbon dating. This is part of a complete episode.
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