The phrase "red half" refers to a group of people who support a certain sports team called "the Reds." This group is considered the "half" because they are only one part of the total number of supporters for that team.
Sentences with «red half»
It applies smoothly — no dragging or skipping here — and with three fierce shades of red in the line, there's one bound to flatter everyone. (thefashionablehousewife.com)
Mix in red pepper flakes and season with salt and pepper. (bonappetit.com)
She always does black and white with red with tons of rock goddess attitude! (fashionshouldbefun.com)