1. Write quickly without much care or effort
   "He tossed off a quick response to the email";
   - dash off, scratch off, knock off [informal], fling off
    
2. Drink down entirely
   "They tossed off a few beers after work";
   - pop [informal], bolt down [informal], belt down [informal], pour down, down [informal], drink down, kill [informal]
    
3. [Brit, vulgar] Get sexual gratification through self-stimulation
   "I decided to toss off rather than go on another bad date";
   - masturbate

Derived forms: tossed off, tosses off, tossing off

Type of: compose, drink, excite, imbibe, indite [archaic], pen, stimulate, stir, write