Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
antes, ium, m. [etym. unc., perh. from ante, as before, over against, one another], rows, e. g. of vines, Verg. G. 2, 417, cf. Paul. ex. Fest. p. 16 Müll.
Also of plants, Col. 10, 376.
Of ranks of soldiers, Cato ap. Philarg. ad Verg. G. 2, 417.