Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
† pīnŏtēres and pīnŏthēres (less correctly pinno-), ae, m., = πιννοτήρης or πιννοθήρης, the pinna-guard, a species of crab found in the shell of the pina, and fabled to keep watch over it, Cic. Fin. 3, 19, 63; Plin. 9, 31, 51, § 98; 32, 11, 53, § 150.