noun. side·​piece | \ ˈsīd-ˌpēs \

Is side piece one word or two?

or side piece

a piece forming a side of something, or attached at the side. Also called side chick [sahyd-chik]. Slang.

What is a jumpoff?

1 : the start of a race or an attack. 2 : a jumping competition to break a tie at the end of regular competition (as in a horse show)