wonderland UK /ˈwʌndəˌlænd/US /ˈwʌndɚˌlænd/noun 2forms 1phrases 1 noun2 •A place full of wonder or marvels.Where other trav'lers, fraught with terror, roam, Lo! Bruce in Wonder-land is quite at home. — 1790 •Synonym of headspace.Typically only used in tulpamancy circles. formswonderlands Phrases with wonderland winter wonderlandA beautiful scene of snow and ice.