dan·der 1 (dān'dər) n.
Informal Temper or anger: What got their dander up?
[Perhaps alteration of dunder, fermented cane juice used in rum-making, fermentation, possibly alteration of Spanish redundar, to overflow, from Latin redundāre; see redundant.]
dan·der 2 (dān'dər) n. Scurf from the coat or feathers of various animals, often of an allergenic nature.
Main Entry: dan·der Pronunciation: 'dan-d&r Function: noun :DANDRUFF;specifically: minute scales from hair, feathers, or skin that may act as allergens