miro noun2 •(New-Zealand) A large conifer of New Zealand, Pectinopitys ferruginea (syn. Prumnopitys ferruginea), with narrow leaves and reddish fruit; the wood of this tree.“The only thing I don't bloody know is where you'd find a miro tree round here.” — 1983 •A portia tree (Thespesia populnea), of dark, durable, attractive wood. formsmiros