Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
* fŏrābĭlis, e, adj. [foro], that may be pierced, penetrable: forabilia ac sectilia quae modice umida, Plin. 16, 43, 83, § 227.
Vulnerable: contemptor ferri nulloque forabilis ictu, Ov. M. 12, 170.