Definition from Wiktionary, the free dictionary
Alternative forms 
From Middle English umbethenken, from Old English ymbeþencan, ymbþencan (“to think about, consider, deliberate”), from ymb- (“around”) + þencan (“to think”), equivalent to um- + bethink or umbe- + think.
- (dialectal, chiefly Northern England, Scotland) To recall to mind; remember; recollect.
- (reflexive, dialectal, chiefly Northern England, Scotland) To consider; think about; bethink.