"iridescence like that of an opal, a play of colors milky rather than brilliant," 1792; see opalescent + -ence. Perhaps via French opalescence.
late 14c., "to cut into cubes," from dice (n.). Meaning "to play at dice" is from early 15c. Related: Diced; dicing.
"object used in a play," 1898, from props (1841), shortened form of properties (which was in theatrical use from early 15c.); see property.
"put something at stake in a game of chance," 1520s, from French hasarder "to play at gambling, throw dice" (15c.), from hasard (see hazard (n.)). Related: Hazarded; hazarding.
"introductory performance; a preliminary to an action event or work," 1560s, from French prélude "notes sung or played to test the voice or instrument" (1530s), from Medieval Latin preludium "prelude, preliminary," from Latin praeludere "to play beforehand for practice, preface," from prae- "before" (see pre-) + ludere "to play" (see ludicrous). Purely musical sense of "movement or piece forming the introduction to a musical work" is attested in English by 1650s. Related: Preludial; prelusive; prelusory; preludious; prelusion.