Beren’s knife (S/177), translated in the Silmarillion Index as “Iron-cleaver” (SI/Angrist), a combination of ang “iron” and the lenited form grist of crist “cleaver” (SA/anga, ris).
Conceptual Development: In Silmarillion drafts from the 1930s, this name was already as N. Angrist at its first appearance (LR/303).
ang (“iron”) + rist (from risto “cleave”) The stem of the last element blended with the stem kris- of similar meaning.