DOUBLE UP • FREE-TRANSLATOR.COM • Definition of Double up

... theory, can put a saddle on the wildest colt that ever grew, without any help, and without scaring him. The first thing will be to tie each stirrup strap into a loose knot to make them short, and prevent the stirrups from flying about and hitting him. Then double up the skirts and take the saddle under your right arm, so as not to frighten him with it as you approach. When you get to him, rub him gently a few times with your hand, and then raise the saddle very slowly until he can see it, and smell, and feel it with his nose. Then let the skirts ...

— The Arabian Art of Taming and Training Wild and Vicious Horses • P. R. Kincaid

... reason that I do not want to take any chance by mentioning wires at all. They don't know now that one wire will not do the trick, and if they get the idea that it is a question of the largest possible number, they will double up on us. As it is, they have sixteen, and we have a fighting chance. At any rate, I will speak to 'Specs' and tell him not to come over ...

— L. P. M. - The End of the Great War • J. Stewart Barney