Mishaal
Yes. Mishaal (مشعل) is an Arabic word-name meaning 'torch' or 'beacon', attested in classical Arabic lexicons.
No. Mishaal as a proper name does not appear in the Quran; it is a lexical Arabic word used historically in literature.
It comes from the triliteral root ش-ع-ل (sha-ʿa-la), related to kindling, lighting, and flame.
Mishaal is relatively uncommon compared with major Islamic names, though it occurs in some Arab and Gulf families.
The name appears in regional and familial records; however, Mishaal is not prominently associated with major early Islamic personages in primary historical sources.