The Collaborative International Dictionary of English v.0.48:
Speeder \Speed"er\, n. 1. One who, or that which, speeds. [1913 Webster] 2. (Spinning) A machine for drawing and twisting slivers to form rovings. [1913 Webster]WordNet (r) 3.0 (2006):
speeder n 1: a driver who exceeds the safe speed limit [syn: speeder, speed demon]