Source : Webster's Revised Unabridged Dictionary (1913)

Duds \Duds\, n. pl. [Scot. dud rag, pl. duds clothing of
   inferior quality.]
   1. Old or inferior clothes; tattered garments. [Colloq.]

   2. Effects, in general.[Slang]

Source : WordNet®

duds
     n : informal terms for clothing [syn: {togs}, {threads}]