Home › Words › O › oatlageoatlage/ˈoʊtlɪd͡ʒ/oatlage means silage made from oats: oat silage.oatlage is pronounced /ˈoʊtlɪd͡ʒ/.EtymologyBlend of oat + silage.nounSilage made from oats: oat silage.Definitions & examples from Wiktionary (CC BY-SA 3.0).