Casters rhymes with:
asters, astor's, disasters, headmasters, lemasters, master's, masters, masters', mcmasters, pastor's, pastors, pilasters, plasters
Casters sounds like:
cadres, castro's, castrucci, caterers, caters, catharsis, cather's, cathers, catheters, cauterize, cauterizes, cedars, cedras, cedras', cedras's, cedric, chatterjee, cheaters, cheddars, chesters, chitra's, citric, citrosuco, citrus, citrus's, coasters, coauthors, codrescu, codrescu's, costars, costa_rica, custer's, cutters