Piepgras rhymes with:
bluegrass, eelgrass, shortgrass, snodgrass, tallgrass, bluegrass, eelgrass, sassafras, shortgrass, snodgrass, tallgrass
Piepgras sounds like:
pacers, packagers, packers, pagers, papageorge, passers, pekarek, pfizer's, pickers, piecework, piekarski, pikers, pisarek, pisarski, pizzerias, poachers, pokorski, psoriasis, pushers, puskarich