Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
ĕquīle, is, n. [id.; cf.: bubile, caprile, ovile, etc.], a stable for horses, Cato, R. R. 14, 2; Varr. R. R. 2, 7, 15; Suet. Calig. 55.