A clear glassy material found in hyaline cartilage or formed as a product of some skin diseases.
They put hyalin in the walls of the house.
A person who's arguments are transparent and in serious lack of any real substance. The logic behind these transparent posts seem to be of a degenerate nature where the poster is horny for an argument.
Girl "You call me 'Wanx' which is a sexual term and very offensive."
Hyalin: "You have a dirty mind, Wanx. I meant it like 'Whack Job'. What did you bring to it?"
Girl: "You call me "Quief" which is a sexual term and very offensive."
Hyalin: "You have a dirty mind, Quief. If you can't figure out how that's similar to a Mucus "Cap" (hint, hint!), then I can only feel worse for you then I already do."