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() From Middle English torven, torvien, from Old English torfian (“to throw, cast missiles, shoot, stone”), from Proto-Germanic *turbōjanan, *turbianan (“to turn, twist”), from Proto-Indo-European *derbh- (“to tie together, weave”). Related to Old English tearflian (“to turn, roll, wallow”), Alemannic German zirbeln (“to swirl, whirl, roll”). See terfle.