fiador
noun
fi·a·dor
¦fēə¦dȯ(ə)r
plural -s
: a cord fastened to a hackamore and acting as a throatlatch
Word History
Etymology
Spanish, literally, guarantor, from fiado (past participle of fiar to trust, guarantee, from—assumed—Vulgar Latin fidare, alteration of Latin fidere to trust) + -or