Definition of crumb noun from the Oxford Advanced American Dictionary



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  1. 1a very small piece of food, especially of bread or cake, that has fallen off a larger piece She stood up and brushed the crumbs from her sweater.
  2. 2a small piece or amount a few crumbs of useful information The president's only crumb of comfort is that his opponents are as confused as he is.
See the Oxford Advanced Learner's Dictionary entry: crumb