a variety of or descending from Low Prussian (East Low German, Low German or Low Saxon), that developed in Royal Prussia and which is now spoken by communities not only in Germany but also in North America (Canada, the United States), South America (Argentina, Brazil), Russia and some other places. (Not to be confused with the High German language Pennsylvania German; both are spoken in Pennsylvania.)

(dated) mental hospital

(mineralogy) A black or steel-grey mineral consisting chiefly of the oxides of iron and titanium.

plural of menaccanite

plural of mental disorder

(psychiatry) A behavioral or mental pattern that may cause suffering or a poor ability to function in life.

an attitude towards differences of opinion, where oppositional stand-off or conflict is preferred over debate and compromise.

A set of choices from which the user or customer makes multiple selections, specifically one or more choices from each of two or more distinct categories.

plural of mental midget

(informal) A stupid person.