Alexander Pro·co·fi·eff de /prəˈkoʊfiˌɛf də/Show Spelled[pruh-koh-fee-ef duh]Show IPA, 1894–1974, U.S. airplane designer, manufacturer, and writer; born in Russia.
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
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.
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.