insectivore UK /ɪnˈsɛktəˌvɔː/US /ɪnˈsɛktəˌvɔɹ/ noun2 •Insect-eating animal or plant.An anteater is an insectivore with a long sticky tongue to catch its prey. •(old-fashioned) mammal of the now abandoned order Insectivora. formsinsectivores