Is broker a design pattern and mentioned in Design Patterns by Gamma et al?

Software Architecture, by Bass says

The broker pattern defines a runtime component, called a broker, that mediates the communication between a number of cllents and servers.

The original version of the broker pattern, as documented by Gamma, Helm, Johnson, and Vlissides [Gamma 94], is given in Figure 13.6.

I don't find the book by Gamma having a pattern called broker. Is broker mentioned in Design Patterns by Gamma et al?

I see broker is listed as an architectural pattern in https://en.wikipedia.org/wiki/Template:Design_Patterns_patterns. Is broker a design pattern or an architectural pattern?

Thanks.