Ashtrays rhymes with:
entrees, emigres, entrees, invirase, jaffray's, madres, mores, padres, paraphrase, x-rays
Ashtrays sounds like:
actor's, actors, actors', actress, actress's, actresses, actuaries, actuators, agitators, asterisk, asters, astor's, astorga, astra's, astros, austrasia, austria's, awestruck