tweet I. \ˈtwēt, usu -ēd.+V\noun (-s) Etymology: imitative 1.: a chirping note < the sharp tweets of the referee's whistle — Nathaniel Benchley > 2.: a high note emitted by sound-reproducing equipment — contrasted with woof II. verb (-ed/-ing/-s) : chirp < songbirds are tweeting — Richard Bissell >