Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
īna, ae, f., a thin fibre in paper (very rare), Marc. Emp. 31: exiles et ilia a tenuitate inarum, quas Graeci in chartis ita appellant, videntur esse dicta, Paul. ex Fest. s. v. exiles, p. 81 Müll.; cf.: ilia dicta ab ina, quae pars chartae est tenuissima, id. s. v. ilia, p. 104 Müll.