Meaning of the Sanskrit Word: sulam

  sulam—trident    SB 3.19.13, SB 6.12.1, SB 7.2.3, SB 8.10.56
  sulam—a trident    SB 4.5.6, SB 5.25.3
  sulam—the trident    SB 6.12.2
  sulam—lance    SB 8.10.44
  sulam—a spear    SB 8.11.30

Can't find any compound Sanskrit words containing sulam.