mansion /ˈmæn.ʃən/noun 9forms 1 noun9 •a home of great size and beauty, usually owned by very rich people •(UK) A luxurious flat (apartment). •[in the plural] An individual habitation or apartment within a large house or group of buildings. (Now chiefly in allusion to John 14:2.)In my Father's house are many mansions [translating μοναὶ (monaì)]: if it were not so, I would have told you. — 1611 •(Hong-Kong) An apartment building. •Any of the branches of the Rastafari movement. •One of twenty-eight sections of the sky. •(historical) An astrological house; a station of the moon. •(no longer used) A house provided for a clergyman; a manse. •(no longer used) A stopping-place during a journey; a stage. formsmansions