Hotbed

Noun

 * 1) a low bed of earth covered with glass, and heated with rotting manure; used for the germination of seeds and the growth of tender plants. A hotbed works as a miniature hothouse, i.e. greenhouse.
 * 2)  an environment that is ideal for the growth or development of something, especially of something undesirable

Thesaurus
Hydra, birthplace, breeding place, brooder, cloche, cold frame, conservatory, coolhouse, cradle, forcing, forcing bed, forcing house, forcing pit, glasshouse, greenhouse, hatchery, hothouse, incubator, lathhouse, milk cow, mustard, nest, nidus, nursery, orangery, pinery, rabbit, rich soil, rookery, seed plot, seedbed, summerhouse, warren

Etymology
From hot: + bed:.

Translations

 * Danish: Varmebed, drivbænk
 * Hungarian:


 * Russian:
 * Swedish: drivbänk


 * Czech: semeniště
 * Hungarian:


 * Russian: