No. That was the slang term for a pirate flag, believed to have been derived from the french term "Joulie Rouge" meaning "pretty red." Ships flying a red flag were signalling that they were prepared to fight to the death.
Ginger
The opposite gender from a stag or buck (male) would be a doe or (especially for red deer) a hind. * For the slang term meaning "single at a gathering", the opposite is together, by couples or pairs.
I think it is because in the old days when they heated metal it went red - molten so thus it is "red hot"
Dermatographism is the term for skin that stays red when scratched.
The term "ranga" is believed to have originated in Australia as a colloquial term for someone with red hair. It is considered a slang term and is often used in a lighthearted or jocular manner.
Cowboys loved a colorful phrase! This was yet another slang term for whiskey or spirits. A drunk's nose was often red.
"Red one" slang term can mean a powerful or high-grade strain of marijuana. It is often used to refer to cannabis buds with a strong red hue due to their potency or quality.
Erythrocyte is the scientific term for red blood cells. erythro- is the combining form meaning red.
The slang term for "no" when pronounced as "naa" would be spelled as "nah."
Indurated
Bilirubin is the term given to red bile produced by hemolysis in the spleen. biliverdin is the term given to green bile.