an extraordinary or unusual thing, person, or event; an exceptional example or instance.
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
1595, from L.L. nullificare "to esteem lightly, despise, to make nothing," from L. nullus "not any" (see null) + root of facere "to make" (see factitious). Nullification in U.S. political sense of "a state's refusing to allow a federal law to