Meaning of the Sanskrit Word: putrakah

  putrakāḥ—My dear sons    SB 5.5.1, SB 9.16.5
  putrakāḥ—O my sons    SB 3.12.5
  putrakāḥ—O demigods.    SB 3.16.34
  putrakāḥ—O my dear servants, who are like my sons    SB 6.3.23

Can't find any compound Sanskrit words containing putrakah.