The Collaborative International Dictionary
To put a spoke in one's wheel
Spoke \Spoke\, n. [OE. spoke, spake, AS. sp[=a]ca; akin to D. speek, LG. speke, OHG. speihha, G. speiche. [root]170. Cf. Spike a nail.]
The radius or ray of a wheel; one of the small bars which are inserted in the hub, or nave, and which serve to support the rim or felly.
(Naut.) A projecting handle of a steering wheel.
A rung, or round, of a ladder.
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A contrivance for fastening the wheel of a vehicle, to prevent it from turning in going down a hill.
To put a spoke in one's wheel, to thwart or obstruct one in the execution of some design.