Here's what rhymes with protoc.
talk chalk dock doc balk doch chock pock bock jock choc stock block rock shock walk hoc knock lock bloc cock mock stalk hawk loc loch proc sock hock gawk mach wok calk caulk clock flock frock smock crock restock schlock backtalk shlock unlock macaque squawk overstock sparrowhawk leafstalk shoptalk ballcock manioc tomahawk interlock aftershock antiknock hollyhock poppycock windsock moonwalk electroshock laughingstock hammerlock Words that almost rhyme with protoc
dog bog jog jag log fog hog blog cog prolog wog frog clog grog smog flog agog slog befog snog sprog defog dialogue epilogue epilog catalogue analog analogue demagogue pedagogue travelogue underdog unclog pedagog travelog demagog quahaug pettifog synagogue monologue monolog synagog dark park bark pork torque barque porque dork bonk mark spark fork mosque stark cork shark lark hark marque stork manque honk bronc conk nark narc wank wonk remark embark quark debark watermark oligarch uncork paperbark reembark tidemark patriarch disembark matriarch meadowlark fingermark