Double Entendre - Raunchy, Risque, Ribald, Rude and Racy

Source: Webster's Revised Unabridged Dictionary (1913)
Double-entendre \Dou"ble-en*ten"dre\, n. [F. double double +
entendre to mean. This is a barbarous compound of French
words. The true French equivalent is double entente.]
A word or expression admitting of a double interpretation,
one of which is often obscure or indelicate.