Vicuna rhymes with:
kuna, kuna, miscayuna, acuna, altoona, antuna, bruna, buena, deluna, duna, fortuna, garrido-luna, hoonah, iduna, kahuna, koruna, kuna, laguna, luna, mezzaluna, miscayuna, natuna, oona, osuna, ozuna, tuna, una
Vicuna sounds like:
vaccine, vaccinia, vachon, vacuum, vagina, vaguine, vajna, vaughan, vaughn, vecchione, veegenan, vegan, vegesna, vesmen, vesna, vezina, viacom, viagene, vicino, vicon, vigen, viggiano, vigna, vigneau, viscomi, vishnu, vision, vixen, vizcaino, vizzini, vogan, voisin, voisine, vossen