An acid-base indicator which is colorless in acid solution, but turns pink to red as the solution becomes alkaline. It is used medicinally as a cathartic.
Tailbacks
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traffic backup initiated and maintained by thoughtless idiot gawkers preceeding a road-side human specatcle.
Tailbacks meaning & definition 1 of Tailbacks.
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a line of vehicles that have stopped or are moving only very slowly, because of an accident or other problem on the road in front of them:
Tailbacks meaning & definition 2 of Tailbacks.
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