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Results found in several dictionaries: Collins, Collaborative Dictionary
peste   sf 
1  (Med) plague 
una peste de ratones  a plague of mice 
MODISMOS huir de algo/algn como de la peste  to avoid sth/sb like the plague 
MODISMOS ser la peste  * to be a nuisance, be a pain *  
 peste aviar fowl pest 
 peste bubónica bubonic plague 
 peste negra Black Death 
 peste porcina swine fever
2  (=mal olor) stink, foul smell 
¡qué peste hay aquí!  there's a real stink in here! 
3 MODISMOS decir  o  echar pestes de algn  to slag sb off *  
siempre anda echando pestes de su jefe  she's always slagging off her boss *  
4  (Cono Sur, gen) infectious disease 
(=viruela) 
smallpox
5  (Andes)  (=resfriado) cold

Collaborative Dictionary     Spanish-English
la peste negra nm. Black Death Reverso General Dictionary 
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'peste' also found in translations in English-Spanish dictionary
black death n. la Peste Negra Reverso General Dictionary 

"Collins Spanish Dictionary 8th edition published in 2005 © William Collins Sons & Co Ltd 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005"