Dome meaning : A structural element resembling the hollow upper half of a sphere; a cupola Anything shaped like an upset bowl, often used as a cover Head (uppermost part of one's body) Head, oral sex A building; a house; an edifice Any erection resembling the dome or cupola of a building, such as the upper part of a furnace, the vertical steam chamber on the top of a boiler, etc. A prism formed by planes parallel to a lateral axis which meet above in a horizontal edge, like the roof of a house; also, one of the planes of such a form To give a domed shape to. To perform fellatio on.