A separate creature that happens to live on your head, hard to tame. Ferociously attacking it with scissors, dye or hairproducts may euthanize said beast for a short while but beware of angering it.

A growing substance found mostly on the head. Hair is largely amino acid based and can come in a veriety of colours e.g. brown, ginger, black or blonde.

stuff always in the way on your head and other not so polite places.

umm ... its like fur, only worse

Something nobody can have too much of.

long dangly stuff that grows on your body

(noun) courage, boldness, wildness, balls, especially in "show hair", to demonstrate these qualities. Probably from mid-20th cent. surfer lingo. Related to "hairy" meaning difficult or frightening.