(pathology) The presence in the bloodstream of microorganisms or their toxins in sufficient quantity to cause serious illness; sepsis or septicemia.

(pathology) Any food-borne disease, such as salmonella, which causes diarrhea, nausea, fever and abdominal cramps.

poisoning due to the presence of phosphorus; a classic symptom is phossy jaw

Any specialized gland in some fishes and amphibians that secretes a mucus-like substance containing venomous or acrid material.

plural of poison gland

(pathology) Synonym of allantiasis

(intransitive) To preemptively raise ad hominem arguments in order to discredit someone. / Used other than figuratively or idiomatically: see poison, the, well.

(Australian rules football, humorous) A fictitious disease said to be contracted by a player who accumulates a large number of possessions of the ball.

(idiomatic) Something which is initially regarded as advantageous but which is later recognized to be disadvantageous or harmful; an apparently beneficial or benign instrument or scheme for causing death or harm.

plural of poison ivy