A verb attested only as an agental-formation in the names Gimilnitîr “Star-kindler” and gimlu-nitîr “kindler of a (particular) star” (SD/428). Thorsten Renk suggested (NBA/32) the base verb is nitir-, and this seems to me to be the likeliest possibility. Andreas Moehn instead suggested (EotAL/NIT’Y) that the verb stem may be nit-, and that the -îr is some kind of feminine agental suffix.
* nitir-verb. to kindle