Words That Rhyme With "Penicillins" :
2 syllables:
Billings, buildings, chitlings, chitlins, collins, drilling's, Dylans, ellen's, felons, fillings, galen's, gillen's, Gilpin, helens, hollins, killings, Mellons, melons, Mifflin, mullens, quillen, quillon, rollins, schillings, shillings, skillings, Stalin's, villains, Wilkins
3 syllables:
Magellan's, quadrillion, quintillion, tefillin, tephillin, vanillin, vaudevillian