(noun) : a fragment, especially of something baked (as bread), that is too small to be picked up by pinching between the finger and thumb; a crumb of a crumb
Please wipe the crumblettes off the table.
Person 1: Could someone get me a towel? These crumbs are too small to be picked by pinching them between my finger and thumb.
Person 2: Sure, I'll get you a towel to wipe up those crumblettes.