spoke (n.) Look up spoke at Dictionary.com
"radius of a wheel," Old English spaca "spoke of a wheel, radius," related to spicing "large nail," from Proto-Germanic *spaikon (source also of Old Saxon speca, Old Frisian spake, Dutch spaak, Old High German speicha, German speiche "spoke"), of uncertain origin, probably from PIE *spei- "sharp point" (see spike (n.1)).