Webster's Revised Unabridged Dictionary · 1913

Snaffle

Snaffle , noun

[Dutch snavel a beak, bill, snout; akin to German schnabel, Old High German snabul,. sneb, snebbe, OFries. snavel mouth, Danish & Swedish snabel beak, bill, Lithuanian snapas, and to English snap, v. See Snap, and compare Neb.]

A kind of bridle bit, having a joint in the part to be placed in the mouth, and rings and cheek pieces at the ends, but having no curb; -- called also snaffle bit.

Snaffle , transitive verb

To put a snaffle in the mouth of; to subject to the snaffle; to bridle.