A simple jointed bit for a horse; without a curb(noun)
WordNet. Princeton University. 2010.
Use "snaffle bit" in a sentence
"It liked the comfort of the snaffle bit in a mouth more used to the pain of curbs; it liked his silence and economy; it liked his peacefulness."
"Richard checked and found the smooth snaffle bit to his approval; she wasn't abusing the animals with cruel bits used to dominate, as he knew some of the Sisters did."