Polcyn rhymes with:
dulcine, ethelson, shavelson, aflatoxin, alfonsin, anacin, angiotensin, ansin, bassin, carrisyn, cassin, cecin, centoxin, chacin, chasin, cossin, crossin, dancin', debrecen, dioxin, dulcine, ethelson, galitsin, haberson, hiaasen, highosin, huchison, kassin, katzin, kosin, kressin, layperson, lesesne, lessin, liesin, locsin, masin, moccasin, naprosyn, nissin, persyn, pessin, poussin, richesin, robitussin, rossin, roxanne, rusin, russin, sarasin, shavelson, sierracin, tassin, ursin, vancomycin, vixen, yasin, yassin
Polcyn sounds like:
palazina, paleocene, paulsen, paulson, pelagian, pelekunu, pelican, pelikan, pellicane, pellicano, peloquin, philson, phlegm, phylogeny, pilson, plasma, pliocene, policeman, policemen, policewoman, policewomen, poliquin, polskin, polson, polygamy, polygon, polygyny, polzin, populism, poulsen, poulson, powelson, pulcini