Blackstock rhymes with:
benstock, bienstock, binstock, bostock, colestock, comstock, fahnestock, feedstock, fensterstock, goldstock, kidstock, laughingstock, livestock, rebstock, rosenstock, weinstock, woodstock
Blackstock sounds like:
ballasts, ballistic, ballistics, bellsouth's, biologists, blackouts, blasts, blockades, blockheads, bulkheads