Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
rēspīrāmen, ĭnis, n. [respiro], the windpipe (Ovid.): respiramen iterque Eripiunt animae, Ov. M. 12, 142; plur.: respiramina claudere, id. ib. 2, 828.