from The Century Dictionary and Cyclopedia
- n. In saddlery, a strap which passes forward from the breeching-rings to the tug at the back-band.
Sorry, no etymologies found.
There was an angry start in one or two of the seats; one man caught at the swinging side-strap and half rose, a husky voice began, "It's a d---- d" -- and then all as suddenly subsided.
"Never sit down to eat with your sword at your side-strap it to your back for a faster draw.