an extraordinary or unusual thing, person, or event; an exceptional example or instance.
a stew of meat, vegetables, potatoes, etc.
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.
1683, "not hitherto described," in scientific usage, coined from non- + L. descriptus, pp. of describere (see describe). Sense of "not easily described or classified" is from 1806.