astrolabe (en)

(noun) a compact instrument used to observe and calculate the position of celestial bodies before the invention of the sextant

mortmain (en)

(noun) an inalienable possession of lands or buildings by an ecclesiastical or other corporation / (noun) the condition of property or other gifts left to a corporation in perpetuity especially for religious, charitable, or public purposes / (noun) the influence of the past regarded as controlling the present

ouvrierism (en)

(communism) The glorification of manual laborers, often in opposition to the leadership of labor or socialist movements