|Noah Webster's Dictionary|
1. (n.) Cunning; craft; artful practice; as, sleight of hand.
2. (n.) An artful trick; sly artifice; a feat so dexterous that the manner of performance escapes observation.
3. (n.) Dexterous practice; dexterity; skill.
Int. Standard Bible Encyclopedia
slit: No connection with "slight," but from the same root as "sly" and so = "cunning." So in Ephesians 4:14, "sleight of men," for kubeia, "dice-plalying" (compare "cube") "gamblers' tricks" "trickery."
Sleight (1 Occurrence)
Ephesians 4:14 That we henceforth be no more children, tossed to and fro, and carried about with every wind of doctrine, by the sleight of men, and cunning craftiness, whereby they lie in wait to deceive; (KJV ASV DBY WBS YLT)