Yer welcome, brucie. I guess I coulda just said it is a strap which holds the saddle on a horse, but the tellin' is so much more fun.:-) Here's probably more than you'll ever need/want to know about Saddles & Tack with links to Cowboy Lore, etc.
Remember "The Man from Snowy River?" Well, his cinch was really, really important!**bg**