hypnotic

Short definition from Wiktionary

Adjective

1. 1
   Of or relating to hypnosis or hypnotism.
2. 2
   Capturing a person's attention to the exclusion of all else, as if placing them into a trance.
3. 3
   Inducing sleep; soporific.
4. 4
   Dormant.

Noun

1. 1
   A person who is, or can be, hypnotized.
2. 2
   A soporific substance.