an early 14c. alteration of sleahthe "wisdom, prudence," also "cleverness, cunning" (c. 1200), from Old Norse sloegð "cleverness, cunning, slyness," from sloegr (see sly). The meaning "feat or trick requiring quickness and nimbleness of the hands" is from 1590s. Term sleight of hand for the tricks of a juggler is attested from c. 1400. Related: Sleighty.
"sleight of hand; the performance of feats requiring dexterity and skill, particularly of the fingers," 1843, from French prestidigitation, which was coined along with prestidigitator (q.v.).
c. 1100, iugulere "jester, buffoon," also "wizard, sorcerer," from Old English geogelere "magician, conjurer," also from Anglo-French jogelour, Old French jogleor (accusative), from Latin ioculatorem (nominative ioculator) "joker," from ioculari "to joke, to jest" (see jocular). The connecting notion between "magician" and "juggler" is dexterity. Especial sense "one who practices sleight of hand, one who performs tricks of dexterity" is from c. 1600.
early 15c., "conjuring tricks, sleight of hand," from Old French léger de main "quick of hand," literally "light of hand." Léger "light" in weight (Old French legier, 12c.) is from Latin levis "light" (from PIE root *legwh- "not heavy, having little weight"). It is cognate with Spanish ligero, Italian leggiero "light, nimble" (hence also leger line or ledger line in music). Main "hand" is from Latin manus (from PIE root *man- (2) "hand").