hot·bed 
/ˈhɑ:tˌbɛd/ noun
plural hot·beds /ˈhɑ:tˌbɛd/ noun [count] : a place where something grows or develops easily : a place where something happens very commonly
▪ The neighborhood has become a hotbed of crime. [=a place where many crimes occur] ▪ a hotbed of research ▪ a hotbed of political unrest
▪ The neighborhood has become a hotbed of crime. [=a place where many crimes occur] ▪ a hotbed of research ▪ a hotbed of political unrest
