Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
† mintha, ae, and minthē, ēs, f., = μίνθη, the Greek name for menta, mint: mentae nomen suavitas odoris apud Graecos mutavit, cum alioqui mintha vocaretur, Plin. 19, 8, 47, § 159.