cur‧dle /ˈkɜːdl $ ˈkɜːrdl/
verb [intransitive and transitive][
Date: 1500-1600;
Origin: curd]
1. to become thicker or form curd, or to make a liquid do this:
Milk may curdle in warm weather.2. make your blood curdle to make you very frightened
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bloodcurdling [TahlilGaran] Dictionary of Contemporary English ▲