Overlock rhymes with:
hammerlock, ashlock, blacklock, carlock, deadlock, erlach, flintlock, gridlock, hammerlock, havelock, hemlock, kalok, landlock, madlock, matchlock, matlock, niblock, oarlock, padlock, portlock, roadblock, sealock, shedlock, sherlock, shylock, spurlock, subhlok, tatlock, warloeck, wedlock, wheelock, whitelock, whitlock, woodlock
Overlock sounds like:
overalls, overhauls, overlays, overlook, overlooks, overrules