Bullhorns rhymes with:
bighorns, longhorns, airborne's, bighorns, hawthorns, layborne's, longhorns, newborns, osborne's, acorn's, acorns, adorns, airborne's, arns, barnes, barns, behrns, bighorns, born's, borns, byrns, cairnes, cairns, carnes, carns, claiborne's, corns, darns, farnes, forewarns, fornes, garnes, hawthorne's, hawthorns, horn's, horns, karnes, karns, keirns, layborne's, leghorns, longhorns, mourns, newborns, osborne's, parnes, scorns, starnes, starns, thorn's, thorns, varnes, warnes, warns, yarns, zornes
Bullhorns sounds like:
ballerinas, ballrooms, blaring, blurring