Dictionary.com's Word of the Year is...
sleight of hand; magic tricks; any illusory feat
French 'light of hand'
one who performs magic tricks
early 15c., "conjuring tricks," from Middle French léger de main "quick of hand," literally "light of hand," from léger "light" in weight (from Latin levis "light;" see lever) + main "hand" (from Latin manus; see manual).