English: waste
Welsh: gwast
Subject: Cyfraith
English definition: eg 'act of waste'. 'Waste' in this context is a legal term meaning 'damage (or occas. simply alteration) to an estate caused by neglect or unauthorised action, especially by a life-tenant.' . 
Welsh definition: ee 'gweithred o wast'. Nid 'gwastraff' yw'r ystyr yn y cyd-destun cyfreithiol penodol hwn.