Definitions
1.NounA rich, thick, Spanish stew consisting of meat and vegetables.
2.NounA medley or mixture; a hotchpotch.
3.NounA collection of various musical, theatrical or other artistic works; a miscellany.
4.NounVaudeville or similar miscellaneous musical or theatrical entertainment skits presented between the main acts of burlesque or minstrel shows.
5.Noun↑ Douglas Harper (2001–2026), “olio”, in Online Etymology Dictionary.