Definition of pests:
(n) :
Any destructive insect that attacks crops or livestock; an agricultural pest.
(n) :
An annoying person, a nuisance.
(n) :
An animal regarded as a nuisance, destructive, or a parasite, vermin.
(n) :
An invasive weed.
(n) :
(now rare) A pestilence, i.e. a deadly epidemic, a deadly plague.
(n) :
The corresponding part of the current-day city of Budapest, on the eastern side of the Danube.