'PEST' definitions:

Definition of 'pest'

From: WordNet
noun
A serious (sometimes fatal) infection of rodents caused by Yersinia pestis and accidentally transmitted to humans by the bite of a flea that has bitten an infected animal [syn: plague, pestilence, pest, pestis]
noun
Any epidemic disease with a high death rate [syn: plague, pestilence, pest]
noun
A persistently annoying person [syn: pest, blighter, cuss, pesterer, gadfly]
noun
Any unwanted and destructive insect or other animal that attacks food or crops or livestock etc.; "he sprayed the garden to get rid of pests"; "many pests have developed resistance to the common pesticides"

Definition of 'Pest'

From: GCIDE
  • Pest \Pest\, n. [L. pestis: cf. F. peste.]
  • 1. A fatal epidemic disease; a pestilence; specif., the plague. [1913 Webster]
  • England's sufferings by that scourge, the pest. --Cowper. [1913 Webster]
  • 2. Anything which resembles a pest; one who, or that which, is troublesome, noxious, mischievous, or destructive; a nuisance. "A pest and public enemy." --South. [1913 Webster]

Acronyms for 'PEST'

From: V.E.R.A.
  • Parameter Estimation by Sequential Testing