1) (of talk, a person) using crude language, subjects etc to laugh at etc (bawdy)

2) something that points to or indicates; pointer (on an instrument) showing measurements; an alphabetical list of names, subjects etc at the end of a book or no cards (a card index) in a library etc (index)

3) a collection of writings on various subjects by various authors (miscellany)

4) the treatment of sexual subjects in an offensive and immoral way using writing, pictures etc (pornography)