(n.) The act of thrusting or pushing out; a driving out; expulsion.

bas-relief bellying boldness booting out bulging defenestration detrusion discharge effusion egestion ejaculation ejection ejectment elimination emanation embossment emergence emersion eminence emission excrescence excrescency excretion expulsion extravasation exudation flow flux gibbosity gibbousness high relief issuance issue jettison kicking downstairs low relief obtrusion ouster ousting projection prominence protrusion protuberance protuberancy rejection relief removal salience salient secretion surfacing the boot the bounce throwing out transudation tuberosity tuberousness vent