Entry 1 sense Webster, 1913 Araguato · A·ra·gua·to · IPA 01 n. A South American monkey, the ursine howler (Mycetes ursinus). See Howler, n., 2. 1. A South American monkey, the ursine howler (Mycetes ursinus). See Howler, n., 2.(Zool.) See: Howler