Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
† mānon, i, n., = μανόν, a kind of soft sponge, Plin. 9, 45, 69, § 148; called also, mānos, i, f.: (spongearum genus) spissum et mollius manos, id. 9, 45, 69, § 149 Jan. (al. mana).
Plur. manoi, f.: maximae fiunt manoi, Plin. 9, 45, 69, § 149.