terret

[ter-it] /ˈtɛr ɪt/
noun
1.
one of the round loops or rings on the saddle of a harness, through which the driving reins pass.
Origin
1480-90; earlier teret, unexplained variant of Middle English toret < Middle French, Old French tor ring (see tour) + -et -et
British Dictionary definitions for terret

terret

/ˈtɛrɪt/
noun
1.
either of the two metal rings on a harness saddle through which the reins are passed
2.
the ring on a dog's collar for attaching the lead
Word Origin
C15: variant of toret, from Old French, diminutive of tor loop; see tour