Definitions
1.nounA cause of misery or death."the bane of one's existence"
2.nounPoison, especially any of several poisonous plants.
3.nounA killer, murderer, slayer.
4.nounDestruction; death.
5.nounA disease of sheep.
6.verbTo kill, especially by poison; to be the poison of.
7.verbTo be the bane of.