(often attributive) A kind of fashionable gown worn by women in the 18th century, having fabric at the back arranged in box pleats which fell loose from the shoulder to the floor with a slight train.

plural of sack-back

A bag containing ten dollars' worth of a drug, especially marijuana.

plural of bivouac sack

folkloric character, in many Latin American countries, who collects naughty children in a large sack and eats them.

plural of hacky sack

plural of halter-sack

(obsolete, derogatory) One who is fit to be hanged; a scoundrel.

(derogatory, slang, vulgar) A despicable person.

Alternative spelling of cocksack