Answer: POISON

AnswerCrossword Clue
POISONToxicant
POISONArrow application
POISONExterminator's option
POISONNegative influence
POISONMurder method in Christie's "A Pocket Full of Rye"
POISONStaple of Agatha Christie mysteries
POISONCause of Romeo's death
POISONToxic stuff
POISONVenom
POISONStrychnine
POISONScull-and-crossbones stuff
POISONPesticide
POISONArsenic e.g.
POISONStrychnine e.g.
POISONFeature of many a whodunit
POISONWhodunit staple
POISONDownfall in many an Agatha Christie novel
POISONOne of the nine weapons in 2008's expanded version of Clue
poisonto kill or injure with poison
poisonsubstance that kills or harms seriously
poisonto administer a killing substance to
poisonto put poison in or on
POISONSomething harmful
POISONLethal stuff
POISONWarning label word
POISONWord seen on a skull and crossbones
POISONCorrupt
POISONTaint
POISONWhodunit weapon
POISONHemlock, for one
POISONSkull-and-crossbones stuff
POISONWhat Mr. Yuk labels
POISONToxicology topic
POISONContaminate
POISONToxic substance
POISONToxin.
POISON... hemlock.
POISONHemlock, for example.
POISONVenom.
POISONKind of pen