The Collaborative International Dictionary of English v.0.48:

Furbelow \Fur"be*low\, n. [Prov. F. farbala, equiv. to F.
   falbala, It. falbal[`a].]
   A plaited or gathered flounce on a woman's garment.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Furbelow \Fur"be*low\, v. t. [imp. & p. p. Furbelowed; p. pr.
   & vb. n. Furbelowing.]
   To put a furbelow on; to ornament.
   [1913 Webster]

WordNet (r) 3.0 (2006):

furbelow
    n 1: a strip of pleated material used as a decoration or a trim
         [syn: frill, flounce, ruffle, furbelow]