Meaning of the Sanskrit Word: pautram

  pautram—the grandson    SB 1.13.16
  pautram—unto the grandson    SB 1.15.38
  pautram—grandson    SB 3.14.51
  pautram—to his grandson    SB 4.11.35
  pautram—his grandson    SB 8.23.5

Can't find any compound Sanskrit words containing pautram.