Emily Dickinson Lexicon

SMOUL-DER-ING, or SMOUL-DRY, a. [a word formed from mold, molder, and therefore it ought to be written smoldering. Perhaps we have the word directly from the Dan. smuler, smuller, Sw. smola, smula, to crumble or fall to dust; Dan. smull, dust; which is from the same root as mold, meal, &c.]

Burning and smoking without vent. – Dryden.