from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. To put to sleep; to quiet.
from the GNU version of the Collaborative International Dictionary of English
- transitive v. To lay asleep; to put to sleep; to quiet.
from The Century Dictionary and Cyclopedia
- To put to sleep; set at rest; quiet; silence; specifically, in Scots law, to quash.
Latin sopitus, past participle of sopire ("to put to sleep"). (Wiktionary)