Dictionary
in•som•ni•ac
Pronunciation: (in-som'nē-ak"), [key]—
n.
a person who suffers from insomnia.
—
adj.
1. having insomnia:
a nervous, insomniac person.
2. of, pertaining to, or causing insomnia.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.