An Etymological Dictionary of the German Language/Trumm
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Trumm, m., ‘end, stomp, fragment,’ which is found besides only in the plur. Trümmer, ‘fragments, ruins,’ is based on MidHG. and OHG. drum, n., ‘end, piece, end-piece, splinter’; comp. OIc. þrǫmr, ‘brim, edge, verge,’ E. (AS.) thrum, ‘end-piece.’ Teut. þramu- (þrumu-), from Aryan trmo-, has rightly been connected with Lat. terminus, Gr. τέρμα, ‘boundary, conclusion, end.’