(a) Trickery, deceit, treachery; lying; (b) act of deceiving; a deception, stratagem, trick; a lie; (c) an ambush; (d) a fowler's snare or trap; some device to impede the passage of ships. …

(a) To purify or cleanse (sth.), make clean or pure; rid (the Church, the Temple, a town) of objectionable persons or things; (b) to purify (metal) by fire, refine; also fig.; scour (metal), remove……