Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
dif-fringo (dīfr-), no perf., fractum, 3, v. a., to break in pieces, to shatter (very rare): crura, Plaut. As. 2, 4, 68: axem, Suet. Caes. 37: gubernaculum, id. Aug. 17: basin Colossici Apollinis, Vitr. 10, 6.