For Sale at Go Daddy:
As of January 26, 2016, one live official trademark (for toys, action figures, and toy truck) was found on USPTO.gov for the exact term
However, according to Dictionary.com, Clocker is also a generic term that refers to a timekeeper at sporting events and/or races and a person who keeps track of traffic flow, for example, at museums and art galleries.
So this domain would likely be safe to use in a profit or non-profit situation, as long as the buyer refrains from using it to brand and sell toys.
However, the buyer may want to refer to a lawyer or trademark expert for information on how this domain may be safely utilized.
This domain could represent an important non-profit platform.
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