Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Crīmīsus (in MSS. and edd. also Crī-messus, Crīmissus, Crīnīsus, and Crīnissus), i, m., = Κριμῖσός (Κριμισσός), a river on the south-west coast of Sicily, Nep. Timol. 2, 4; Verg. A. 5, 38; Claud. Rapt. Pros. 2, 57; Hyg. Fab. 273.