The name of the sword of Fingolfin “that glittered like ice” (S/152). The name is an elaboration of [ᴹQ.] ringe (ringi-) “cold” (SA/ring).

Conceptual Development: The name ᴱQ. Ringil first appeared in the earliest Lost Tales as the name of the tower holding the northmost lamp that lit the world (LT1/69), later as either the lamp itself (Ety/RINGI) or the sea formed after its fall (LR/32). It was first used as the name of Fingolfin’s sword in The Lays of Beleriand (LB/285). The name ᴹQ. Ringil appeared in The Etymologies from the 1930s as a derivative of the root ᴹ√RINGI, at that point still both the lamp and the sword (Ety/RINGI). In Silmarillion revisions from the 1950s-60s, the name of the lamp was changed to Ormal (MR/7), but Ringil remained the name of Fingolfin’s sword.