Residual matter.
Often used in plural: butt4, end, fragment, scrap1, shard, stub. See leftoverA tiny amount:
bit1, crumb, dab1, dash, dot, dram, drop, fragment, grain, iota, jot, minim, mite, modicum, molecule, ounce, particle, scrap1, scruple, shred, smidgen, speck, tittle, trifle, whit. (Chiefly British) spot. See big
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