Interregna Interregnum Definition: An interregnum (plural interregna or interregnums) is a period of discontinuity or "gap" in a government, organization, or social order.. Wikipedia suggests interregnum . Interregna contains 10 letters and has 1172 connections / rhymes. 51 Lasagna Lasagna Definition: Lasagna (also spelled Lasagne) is a classic Italian pasta casserole