Harrah's rhymes with:
o'hara's, ohara's, basara's, berra's, calaveras, cara's, cara'veras, era's, o'hara's, ohara's, pantera's, parras, sara's, sarah's, serra's, sierra's, sierras, tara's, terra's, veras
Harrah's sounds like:
hair's, hairs, harass, harasses, harc, hare's, hares, hargis, hargus, harig, haris, hariz, harjo, harju, hark, harke, harkey, harks, harries, harris, harris', harris's, harrises, harriss, harry's, harsch, harsco, harsh, harsha, harshaw, harwick, hearers, hears, hearsay, hearse, heiress, heiresses, heirs, heoroico, her's, herceg, herczeg, here's, heresy, herk, hero's, heroes, heroic, heroics, heroize, heros, heroux, herriage, herrick, herrig, hers, hersch, herscu, hersey, hersh, hershey, hershey's, herwick, herwig, herz, herzig, herzog, heuer's, hierarchies, hierarchy, hiers, hires, hiroaki, hirose, hiroshi, hiroyuki, hirsch, hirsch's, hirschi, hirschy, hirsh, hoarse, hoerig, horace, horace's, horacek, horacia, horacio, horak, horch, horchow, horejsi, horiguchi, horiuchi, horkey, horky, horrocks, horrors, hors, horsch, horse, horse's, horses, horses', horseshoe, horseshoes, horsey, horus, horwich, hour's, hours, hours', hruska, hurco, hurries, hursey, hursh, hyers, hyraxes