Double strike
Introduction '''Double strike''' or '''double struck''' may refer to:* A double struck coin, which occurs when a coin is struck twice in the minting process. * ''Double striking'', or typing a character over itself on a typewriter as a way to make it darker (or by accident). * Blackboard bold, whose characters are sometimes called ''double-struck'', a typeface style imitating the chalk writing used for mathematical symbols such as    and  which can be approximated on a typewriter by double striking the letters with a horizontal offset. * 2023 Hollywood labor disputes, nicknamed the "Hollywood double strike" after the actors' guild declared a labor strike in July of that year, joining the writers' guilds who had gone on strike in May. * ''Double Strike'', a 1989 video game developed and published in Taiwan by Sachen. * In bowling, strikes on two consecutive rolls.
See also * Double stroke, in drumming, a rudiment consisting of alternating diddles of indeterminate speed and length