Definitions for falstaffˈfɔl stæf, -stɑf
Random House Webster's College Dictionary
Fal•staffˈfɔl stæf, -stɑf(n.)
Sir John, the fat jovial somewhat unscrupulous knight in Shakespeare's Henry IV, Parts 1 and 2, and
The Merry Wives of Windsor.
Fal•staff•i•anfɔlˈstæf i ən(adj.)
Falstaff, Sir John Falstaff(noun)
a dissolute character in Shakespeare's plays
A fat and jolly knight. The character was invented by William Shakespeare for his plays Henry IV (parts 1 and 2) and also appeared in The Merry Wives of Windsor.