elastrum

== Latin == === Etymology === From Ancient Greek ἔλαστρον (élastron, “that which drives”), from ἐλαύνω (elaúnō, “to drive, set in motion”) +‎ -τρον (-tron, suffix forming instrument nouns). === Pronunciation === (Classical Latin) IPA(key): [ɛˈɫas.trũː] (modern Italianate Ecclesiastical) IPA(key): [eˈlas.trum] === Noun === elastrum n (genitive elastrī); second declension (New Latin) spring, elastic substance ==== Declension ==== Second-declension noun (neuter).