Webster's Revised Unabridged Dictionary · 1913

Juggler

Juggler , noun

[Old English jogelour, juglur, Old French jogleor, jugleor, jongleor, French jongleur, from Latin joculator a jester, joker, from joculus a little jest or joke, dim. of jocus jest, joke. See Joke, and compare Jongleur, Joculator.]

This sense is now expressed by magician or conjurer.

1.
One who juggles; one who practices or exhibits tricks by sleight of hand; one skilled in legerdemain; a conjurer. [Archaic]
As nimble jugglers that deceive the eye. — Shakespeare
Jugglers and impostors do daily delude them. — Sir T. Browne
2.
A deceiver; a cheat. — Shakespeare
3.
A person who juggles objects, that is who maintains several objects in the air by passing them in turn from one hand to another.