1. mouthful - Noun
2. mouthful - Adjective
As much as is usually put into the mouth at one time.
Hence, a small quantity.
Source: Webster's dictionaryA handful of soldiers is always better than a mouthful of arguments. Georg Christoph Lichtenberg
But for the sake of some little mouthful of flesh we deprive a soul of the sun and light, and of that proportion of life and time it had been born into the world to enjoy. Plutarch
In France, a chemist named Pilatre de Rozier tested the flammability of hydrogen by gulping a mouthful and blowing across an open flame, proving at a stroke that hydrogen is indeed explosively combustible and that eyebrows are not necessarily a permanent feature of one's face. Bill Bryson
Every time the sheep bleats it loseth a mouthful. Italian Proverb
It's a bad mouthful that chokes. Italian Proverb
Don't take another mouthful before you have swallowed what is in your mouth. Madagascan Proverb