Picaro rhymes with:
allegro, bobrow, borrow, budrow, damrow, deskpro, dubrow, duro, ebro, farrow, goodreau, goodroe, goodrow, guinarou, gyro, hydro, janeiro, jayroe, lagrow, metro, micro, micropro, moro, neuro, overthrow, petrow, rio-de-janeiro, steinroe, sumrow, tedrow, tomorrow, whitrow, withrow, woodrow, yoshihiro, zorro
Picaro sounds like:
paccar, pacer, packager, packer, pagar, pager, passaro, passer, passero, paxar, peacher, pechora, pecor, pecora, pecoraro, pecore, peguero, peiser, pekar, peshawar, peyser, pfizer, picher, pickar, picker, pickier, picower, piker, pixar, pizarro, pizer, pizzazier, pizzeria, poacher, poker, pooser, poser, possessor, poucher, poyser, pucker, pusher, puskar, pysher