Webster's Revised Unabridged Dictionary · 1913

Hypnotic

Hypnotic , adjective

[Greek {not transcribed} inclined to sleep, putting to sleep, from {not transcribed} to lull to sleep, from {not transcribed} sleep; akin to Latin somnus, and English somnolent: compare French hypnotique.]

1.
Having the quality of producing sleep; tending to produce sleep; soporific.
2.
Of or pertaining to hypnotism; in a state of hypnotism; liable to hypnotism; as, a hypnotic condition.

Hypnotic , noun

1.
Any agent that produces, or tends to produce, sleep; an opiate; a soporific; a narcotic.
2.
A person who exhibits the phenomena of, or is subject to, hypnotism.