mockingbird UK /ˈmɒkɪŋbɜːd/US /ˈmɑkɪŋˌbɝd/ noun2 •Any of various long-tailed American songbirds of the genera Mimus and Melanotis, noted for their ability to mimic calls of other birds. •(no longer used) Synonym of tui (“a species of honeyeater, Prosthemadera novaeseelandiae, a bird which is endemic to New Zealand”). formsmockingbirds