Definition of: plague

(plāg) noun
1. Anything troublesome or harassing, producing mental distress; affliction.
2. A pestilence or epidemic disease of man or animals, occurring in many forms and usually intensely malignant and contagious: bubonic plague, pulmonary plague.
3. Any great natural evil or calamity.
4. Colloq. Nuisance; bother. See synonyms under ABOMINATION.
—v.t. plagued, pla·guing
1. To harass or torment; vex; annoy.
2. To afflict with plague or disaster. [<OF plage, plague <LL plaga a pestilence <L, a stroke, prob. <dial. Gk. (Doric) plaga a stroke <plag-, root of plēssein strike]