Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
ĭmāgĭnĭfer, ĕri, m. [imago-fero], an image-bearer, i. e. one who bears the emperor’s image (as a standard), Veg. Mil. 2, 7; Inscr. Orell. 3478 sq.