Dispelling or resisting falling asleep. ... Origin: L. Somnus, sleep, + fugo, to put to flight ... (05 Mar 2000) ... Found on http://www.encyclo.co.uk/local/20973
Som·nif'u·gous adjective [ Latin somnus sleep + fugare to put to flight.] Driving away sleep. [ Obsolete] Found on http://www.encyclo.co.uk/webster/S/144