Meaning of the Sanskrit Word: nalakuvara

  nalakūvara—one of them was Nalakūvara    SB 10.9.23
  nalakūvara—Nalakūvara    SB 10.10.23
  nalakūvara—O Nalakūvara and Maṇigrīva    SB 10.10.42

Can't find any compound Sanskrit words containing nalakuvara.