picksplit-up . split-up {n.} A separation or division into two or many smaller parts. The split-up of our company was due to the founder's untimely death. Categories: add yours death noun Source: A Dictionary of American Idioms 'split-up' on video HΛL SPLIT UP Let's Split Up [Animatic] SPLIT UP HΛL - SPLIT UP sort: relevance, mode: exact match, q: "split-up", maxResults: 4, videoEmbeddable: true, videoSyndicated: true, safeSearch: strict, type: video Subscribe to: American IdiomsEnglish Slang Discuss