1. A light fitful sleep
   "He fell into a drowse during the boring lecture";
   - doze

1. Have a short sleep, esp. during the day
   "She drowses everyday after lunch for an hour";
   - nap, catnap, catch a wink [informal], kip [Brit, informal], snooze, doze, zizz [Brit, informal]
    
2. Be on the verge of sleeping
   "The students were drowsing in the 8 AM class"

Derived forms: drowsed, drowses, drowsing

See also: nod off [informal]

Type of: catch some Z's [N. Amer, informal], rest, sleep, slumber

Encyclopedia: Drowse