"a lady," 1660s, from the common title of respect for Italian and Portuguese ladies, equivalent to Spanish doña, prefixed to the Christian name. The fem. equivalent of don (n.).
computer programming language for use in business operations, 1960, U.S. Defense Department acronym, from "Common Business-Oriented Language."
masc. proper name, from French Colin, a diminutive of Col, itself a diminutive of Nicolas (see Nicholas). A common shepherd's name in pastoral verse.
also do-se-do, common step in square-, contra-, polka-dancing, etc., 1929, from French dos-à-dos "back to back" (see dossier).