Plinius rhymes with:
aerolineas, aerolineas, ignominious, phineas, acrimonious, aeneas, aerolineas, antonius, bournias, contemporaneous, cyrenius, erroneous, extraneous, felonious, fresenius, harmonious, homogeneous, igneous, ignominious, instantaneous, miscellaneous, morphonios, palonius, parsimonious, percutaneous, phineas, sanctimonious, simultaneous, spontaneous, thelonius, unceremonious, vilnius
Plinius sounds like:
palance, palansky, palauans, palinkas, palma's, palms, palonius, paulhamus, pauling, pavilions, pawling, peeling, peplinski, phalange, phalanges, phalanx, piling, pilings, pilling, pilnak, pipeline's, pipelines, pipelines', plaines, plains, plan's, planas, planck, plane's, planes, planes', plank, planks, planning, plans, plans', playing, plemmons, plemons, plenum's, plink, plonka, plonski, plowing, plowman's, plum's, plumage, plumages, plumes, plums, plunge, plunges, plunk, plying, polanco, polanski, polansky, polemic, polemics, polhamus, polhemus, poling, polinski, polinsky, pollens, polling, pollyannish, polonaise, polonsky, polynesia, pooling, poulenc, poulenc's, pulling, pullins, pullman's, pylons