Hypertext Webster Gateway: "dunder"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Dunder \Dun"der\, n. [Cf. Sp. redundar to overflow.]
The lees or dregs of cane juice, used in the distillation of
rum. [West Indies]
The use of dunder in the making of rum answers the
purpose of yeast in the fermentation of flour. --B.
Edwards.
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