pesäke (englanniksi)

growth (s: pathology / mass of cells affected by a disease)
colony (s: microbiology / of bacteria e.g. in a Petri dish)
nest (s: military / as in: machine gun nest)
hot spot (s: military / center of dangerous activity, normally used with a modifier to specify the kind of danger, as in ''kriisipesäke'')
Sana perusmuodossa: pesäkkeet