Definition of quicklime in US English:

quicklime

noun

  • A white caustic alkaline substance consisting of calcium oxide, which is obtained by heating limestone and which combines with water with the production of much heat; lime.

Origin

Late Middle English: from quick + lime, after Latin calx viva or Anglo-Norman French chaux vive.

Pronunciation

quicklime

/ˈkwikˌlīm//ˈkwɪkˌlaɪm/