Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
quā̆drĭēris (quā̆t-), is, f. [vox hibr. from quattuor and ἄρω, analog. to τριήρης], a vessel having four banks of oars, a quadrireme (post-class.): EX CLASS. PR. MIS. QVADRIERE FIDE, Inscr. Murat. 876, 3: quatrieris, Not. Tir. p. 177.
quā̆trĭēris, v. quadrieris.