1. an evening drum or bugle signal recalling soldiers to their quarters: "a military tattoo takes place with clockwork precision"
▪ an entertainment consisting of music, marching, and the performance of displays and exercises by military personnel: "a visit to Edinburgh during the Festival includes a visit to the Tattoo"
▪ a rhythmic tapping or drumming:"she tapped her fingers in a nervous tattoo"
Word Originmid 17th century (originally as tap-too) from Dutch taptoe!, literally ‘close the tap (of the cask)!’.