Noun

(en noun)

(historical) A member of a Muslim militant group responsible for murdering Christian leaders during the Crusades.

*, II.29:

The Assassines , a nation depending of Phœnicia, are esteemed among the Mahometists of a soveraigne devotion and puritie of maners; they hold, that the readiest and shortest way to gaine Paradise, is to kill some one of a contrary religion.

Someone who intentionally kills a person, especially a professional who kills a public or political figure.

* {{quote-magazine, date=2013-06-29, volume=407, issue=8842, page=55, magazine=(The Economist)

, title= Travels and travails , passage=Even without hovering drones, a lurking assassin , a thumping score and a denouement, the real-life story of Edward Snowden, a rogue spy on the run, could be straight out of the cinema. But, as with Hollywood, the subplots and exotic locations may distract from the real message: America’s discomfort and its foes’ glee.}}

Any ruthless killer.

Noun

(en noun)

One of an order of priests among certain groups of Celts before the adoption of Abrahamic religions.

* 2004 , Fitch, E. J. Right Action and the environment: a common environmental catechism, fundamentalism, and political extremism. Interdisciplinary Environmental Review , 6(2), 132-139.

Druidic faiths to the loose coupling one found in the Roman rites. The ascendance to dominance, at least in terms of number of adherents, of the three monotheistic Abrahamic faiths marked a decline