The definition of an assassin is a murderer who strikes by surprise, usually the killer of someone famous or is hired to commit murder.
(noun)See assassin in Webster's New World College Dictionary
noun
Origin: Fr < ML assassinus < Ar ḥashshāshīn, hashish users < ḥashīsh, hemp
See assassin in American Heritage Dictionary 4
noun
Origin:
Origin: French
Origin: , from Medieval Latin assassīnus
Origin: , from Arabic ḥaššāšīn
Origin: , pl. of ḥaššāš, hashish user
Origin: , from ḥašīš, hashish; see hashish
. Word History: Active in Persia and Syria from the 8th to 14th centuries, the original Assassins were members of the Nizaris, a Muslim group who opposed the Abbasid caliphate with threats of sudden assassination by their secret agents. Other populations of the area regarded the Nizaris as unorthodox outcasts, and from this attitude came one of the names for the group, ḥaššāšīn, a word originally meaning “hashish users,” which had become a general term of abuse. Reliable sources offer no evidence of hashish use by Nizari agents, but sensationalistic stories of murderous, drug-crazed ḥaššāšīn or Assassins were widely repeated in Europe. Marco Polo tells a tale of how young Assassins were given a potion and made to yearn for paradise—their reward for dying in action—by being given a life of pleasure. As the legends spread, the word ḥaššāšīn passed through French or Italian and appeared in English as assassin in the 16th century, already with meanings like “treacherous killer.”Learn more about assassin