"jam up sth" in German to jam up sth. etw. einklemmen festklemmen verklemmen blockieren Detailed translations for "jam up sth" to jam up sth. to jam up sth.(also: to jam sth.) etw. einklemmen to jam up sth.(also: to jam sth.) festklemmen to jam up sth.(also: to jam sth.) verklemmen to jam up sth.(also: to jam sth.) blockieren{transitive verb}