a. 引起酣睡的, 催眠的

[医] 引起迷睡的

Soporiferous \Sop`o*rif"er*ous\, a. [L. soparifer; sopor a heavy
sleep + ferere to bring.]
Causing sleep; somniferous; soporific. ``Soporiferous
medicine.'' --Swift.
※ -- {Sop`o*rif"er*ous*ly}, adv. --
{Sop`o*rif"er*ous*ness}, n.