Meaning of the Sanskrit Word: sisun

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

Can't find any compound Sanskrit words containing sisun.