The Collaborative International Dictionary of English v.0.48:
Spindleshanks \Spin"dle*shanks`\, n. A person with slender shanks, or legs; -- used humorously or in contempt. [1913 Webster]WordNet (r) 3.0 (2006):
spindleshanks n 1: a thin person with long thin legs [syn: spindlelegs, spindleshanks] 2: long thin legs [syn: spindlelegs, spindleshanks]