Sentries rhymes with:
entries, countries, countries', country's, descarpentries, entries, pleasantries, asymmetries, chartres, countries, countries', country's, descarpentries, entries, geometries, industries, industries', industry's, ministries, ministry's, pastries, petrie's, pleasantries, registries, tapestries, toiletries
Sentries sounds like:
san-andreas, sanders, sanders's, sandrock, saunders, saunders', saunders's, saundra's, schneider's, schneiders, schneiders', schnieders, schnyder's, secondaries, senator's, senators, senators', senders, senters, sentras, signatories, signatures, sinatra's, smathers, smethers, smithers, smothers, smotrich, snyder's, sonatrach, soundtrack, soundtracks, squanders, summiteers, syndrich, syntrex