mugthressum Save DMLBS mugthressum [ME mug < AS muga+ME thresh, thress] , (right to collect) threshed grain. 1234 debet metere j acram frumenti et ‥ triturare mughthress’ ‥ et habere stramen et j stagga[m] de eodem blado plenum Cust. Glast. 87.