Meaning of the Sanskrit Word: sisun

  sisun—children    SB 1.7.51, SB 7.1.37, SB 10.6.7
  sisun—small children    SB 1.13.34
  sisun—so many children.    SB 10.4.17
  sisun—all such children.    SB 10.4.31
  sisun—small babies    SB 10.6.2

Can't find any compound Sanskrit words containing sisun.