fā, lām, kāf
4 names share this root — every one of them carries a thread of the same meaning.
Falak is a direct Quranic name for boys and girls that means orbit, space, cosmos, path of the galaxies and ship. The word Falak is used twice in the Quran, in verses 21:33 and 36:40.
Responsible, Surety, Sponsor
Guarantor, surety, sponsor, responsible.
No independent English meaning found for this name in these sources. Its Arabic spelling matches a real word in the Quran — see the citation below.