Noun

1. A complicated or clandestine plot or scheme intended to effect some purpose by secret artifice; conspiracy; stratagem.
2. The plot of a play, poem or romance; the series of complications in which a writer involves his imaginary characters.
3. Clandestine intercourse between persons; illicit intimacy; a liaison.

Verb

1. To conceive or carry out a secret plan intended to harm; to form a plot or scheme.
2. To arouse the interest of; to fascinate.
3. To have clandestine or illicit intercourse.