Bottom normally means the base, or the lowest point, of an object or geographic feature. It can also refer to: Buttocks Bottom (sex), a term used by gay, BDSM, and some straight couples Bottom (BDSM) Nick Bottom, a character from Shakespeare's A Midsummer Night's Dream Bottom (TV series), a British sitcom and stage show The bottom quark, a subatomic particle Bottom element, in lattice theory and related branches of mathematics Bottom type, or empty type, in type theory "Bottom", a song… (More on Bottom)