The Collaborative International Dictionary
Dandy \Dan"dy\ (d[a^]n"d[y^]), n.; pl. Dandies (d[a^]n"d[i^]z). [Cf. F. dandin, ninny, silly fellow, dandiner to waddle, to play the fool; prob. allied to E. dandle. Senses 2 & 3 are of uncertain etymology.]
One who affects special finery or gives undue attention to dress; a fop; a coxcomb.
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(Naut.)
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A dandy roller. See below.
Dandy brush, a yard whalebone brush.
Dandy fever. See Dengue.
Dandy line, a kind of fishing line to which are attached several crosspieces of whalebone which carry a hook at each end.
Dandy roller, a roller sieve used in machines for making paper, to press out water from the pulp, and set the paper.
Wiktionary
n. A kind of fishing line to which are attached several crosspieces of whalebone which carry a hook at each end.