The MacMillan Dictionary defines doohickey as "something such as a small object or tool that you cannot remember the name of." The American Heritage Dictionary says it is "something, especially a small device or part, whose name is unknown or forgotten."
The MacMillan Dictionary defines doohickey as "something such as a small object or tool that you cannot remember the name of." The American Heritage Dictionary says it is "something, especially a small device or part, whose name is unknown or forgotten."