Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
caelāmen, ĭnis, n. [caelo], a basso-relievo (prob. formed by Ovid; rare): clipei caelamina, Ov. M. 13, 291; App. Flor, n. 7; id. de Deo Socr. p 40, 30 Elm.