Sŏp'/o-rĭf'ic1, a.
a. [Fr. soporifique, from Lat. sopor, a heavy sleep, and facere, to make.] Causing sleep; tending to cause sleep; soporiferous; as, the soporific virtues of opium.
2 entries under this word
Soporific
Sŏp'o-rif'ic2, n.
n. A medicine, drug, plant, or other thing that has the quality of inducing sleep.