ruderare

ruderare [cf. CL rudus, -eris+-are, ruderatio] 1 to manure (land). tathyn lond with schepys dong, ~o, -as, etc. PP. 2 to clear away (rubbish or debris). ruder, stercus vel quod de effossa terra egeritur. pluraliter rudera, unde et ~are vel eruderare pro purgare dicimus Osb. Glouc. Deriv. 509.