suboscine adjective 1noun 1forms 1 adjective1 •Of or pertaining to the passerine birds of the suborder Tyranni. noun1 •Any of the passerine birds of suborder Tyranni, which includes broadbills, asities, pittas, antbirds and others.New Zealand wrens (Acanthisittidae) are the most basal passerines, suboscines are mostly South American, and most taxa originally included in the oscine group Corvida are Australasian. — 2012 formssuboscines
